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Radio over Fiber 5G: Networking and the use of optical fiber for transmitting for analog converting

Radio over Fiber (RoF), a technology that helps implement 5G networks, is becoming increasingly popular among telecom professionals and users alike. By leveraging existing optical fiber infrastructure, RoF allows faster transfers of data with lower latency and higher network stability. As 5G rollouts become more widespread, understanding the basics about Radio over Fiber and its components is crucial for maximizing your 5G networking potential. Here we will provide an overview of the technology behind RoF and discuss the benefits as well as challenges faced when implementing it in a 5G network.

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The next phase of mobile technology is 5G, which promises to be a giant leap forward from 4G LTE. One of the key components of 5G is radio over fiber (RoF). We will explore what RoF is and how it can be used in 5G networks. We will also discuss the benefits and challenges of implementing RoF in 5G networks.

What is Radio over Fiber?

Radio over fiber (RoF) technology transmits radio signals using optical fibers instead of copper cables. The signals are converted to light, sent through the fibers, and then converted back to electrical signals at the receiving end. RoF can carry both digital and analog signals.

The main advantage of RoF is that it can transmit data over long distances without signal loss. This makes it ideal for applications where radio signals need to be transmitted over long distances, such as in mobile networks. RoF also has several other advantages, including increased security and lower costs.

How does Radio over Fiber 5G work?

Radio over Fiber (RoF) is a technology that enables the transmission of radio signals over optical fiber. The 5G RoF system uses millimeter wave (mmWave) frequencies to support the high data rates required for 5G applications. MMWave frequencies can carry more data than lower frequencies but are also more susceptible to attenuation and interference. To overcome these challenges, the 5G RoF system uses an advanced modulation scheme that encodes the data onto a higher-order carrier signal. This enables the data to be transmitted over longer distances with less attenuation and interference.

What are the benefits of Radio over Fiber 5G?

The benefits of Radio over Fiber 5G are many and varied. For one, using optical fiber for transmitting signals results in far less interference than traditional methods. Additionally, because Radio over Fiber 5G uses light to carry the signal, there is no need for expensive and complicated radio equipment. This means that Radio over Fiber 5G is much more scalable than other methods, making it ideal for large-scale deployments. Finally, optical fiber also allows for much higher data rates than traditional methods, making Radio over Fiber 5G perfect for applications that require high bandwidth.

Are there any drawbacks to Radio over Fiber 5G?

There are some drawbacks to Radio over Fiber 5G technology. First, it is expensive to deploy and maintain. Second, the system can be complex to operate and manage. Finally, the quality of the signal can degrade over long distances.

5G Networks and the Use of Optical Fiber

The 5G network is a next-generation telecommunications system that uses optical fiber for transmitting and converting analog signals. The 5G network is capable of transmitting data at speeds of up to 10 gigabits per second. Optical fiber makes the 5G network more reliable and secure than other networks. Optical fiber also allows the 5G network to be used for long-distance communications.

What is an analog to Optical Fiber converter for 5G?

5G is the next coming generation of wireless technology, promising to revolutionize how we use the internet. One of the critical technologies that will make 5G possible is radio over fiber (RoF). RoF is a way of transmitting radio signals over optical fiber, and it has many advantages over traditional wireless transmission methods.

One of the most significant advantages of RoF is that it can carry much more data than traditional methods. This is because RoF uses multiple frequency channels, each of which can carry its own data stream. Traditional methods only have a single channel, so they can only carry one data stream at a time.

Another advantage of RoF is that it is much less susceptible to interference than traditional methods. This is because RoF uses light to transmit signals, and light does not interact with other electromagnetic waves in the same way that radio waves do. This means that RoF signals are less likely to be interrupted by things like bad weather or buildings.

The final advantage of RoF is that it has very low latency. Latency is the delay between when a signal is transmitted and when it is received, and it can be a major problem with traditional wireless systems. However, the latency is very low since RoF uses light to transmit signals. This means that 5G networks can provide high-speed connections with minimal delay.

What are optical transmitters and receivers?

An optical transmitter and receiver is a device that converts an electrical signal into an optical signal and transmits it over an optical fiber. An optical receiver is a device that receives an optical signal and converts it into an electrical signal.

Radio over fiber (RoF) technology transmits radio frequency (RF) signals over optical fibers. It is commonly used in wireless networks to connect base stations or antennas to the network core. RoF can also be used to connect two or more buildings together using fiber optic cable.

RoF systems typically use a laser to convert the RF signal into an optical signal. The optical signal is then transmitted over the fiber optic cable to the receiving end, which is converted back into an RF signal by a photodiode.

Using RoF technology has several benefits, including increased bandwidth and improved security. RoF can also be used to extend the range of wireless networks and improve their reliability.

Using optical transmitter and receiver for 5G das solutions

Currently, 4G LTE networks are limited to about 1 Gbps speeds, but 5G will be able to achieve speeds of up to 10 Gbps. To achieve these high speeds, 5G will use millimeter wave (mmWave) technology. MMWave is a form of radio waves that can carry more data than traditional radio waves.

To transmit data over mmWave, 5G will use beamforming technology. Beamforming is a way of focused transmission that allows data to be sent over long distances without being scattered. 5G will use an array of antennas to focus on the transmission. These antennas will work together to send data in a focused beam.

The problem with using mmWave for 5G is that it cannot penetrate walls or other obstacles. This means that 5G will only work outdoors or in line-of-sight situations. To overcome this limitation, some service providers consider using fiber optic cables as part of their 5G infrastructure.

Fiber optics are much better at transmitting data than copper wires or coaxial cables. They are also capable of carrying much higher frequencies than either of those two options. This makes them ideal for transmitting the high-frequency signals used by 5G.

There are two main ways that fiber optics can be used for 5G. The first is to use them as part of the backhaul network. The backhaul network is the portion of the network that connects the cell towers to the internet. Using fiber optics for the backhaul network would allow 5G speeds to be achieved over long distances.

The second way fiber optics can be used for 5G is to connect individual homes and businesses directly to the 5G network. This would bypass the need for a cell tower entirely. Instead, data would be sent directly from the 5G network to the home or business over a fiber optic connection.

One company that is working on this technology is Verizon. Verizon has been testing a fiber optics system to connect homes and businesses directly to their 5G network. The tests have been successful so far, and Verizon plans to roll out this technology to more markets.

What is 5G das solutions?

5G das solutions are a type of radio over fiber technology that uses optical fiber to transmit analog signals. This type of technology is used to improve the performance of wireless networks and provide an alternative to traditional copper-based cables. 5G das solutions offer several advantages over other types of radio over fiber technologies, including higher bandwidth and lower latency.

5G das solutions offer some advantages over other types of radio over fiber technologies, including higher bandwidth and lower latency. In addition, 5G das solutions are less expensive to deploy and maintain than other types of radio over fiber technologies.

One of the key benefits of 5G das solutions is that they offer a higher degree of flexibility regarding network design. 5G das solutions can create networks with various topologies, including star, mesh, and hybrid. This flexibility allows network operators to tailor their networks to meet the specific needs of their applications and users. In addition, 5G das solutions can create virtual private networks (VPNs) that provide secure, end-to-end connectivity between sites.

5G das solutions are also well suited for use in mobile networks. This is because 5G das technologies offer high bandwidth and low latency, two key factors that are important for mobile applications. In addition, 5G das solutions are less expensive to deploy and maintain than other types of radio over fiber technologies.

Optical fiber for transmitting analog signals has many benefits over traditional methods, such as improved signal quality and reduced interference. Radio over Fiber 5G is a new technology that takes advantage of these properties to offer a more efficient and reliable 5G network. If you’re searching for a way to improve your 5G service, Radio over Fiber 5G is definitely worth considering.

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The 6 Best Practices for Securing Enterprise AI Copilots

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Enterprise AI copilots and automation assistants now sit inside email, CRM systems, ITSM platforms, and office productivity suites, each with its own defaults and its own blind spots. The six practices below apply across that whole category, regardless of which specific copilot or automation platform an organization has deployed.

1. Scope permissions before the copilot ever touches production data

Default permission scopes on most enterprise copilots are broader than the actual task requires. Reviewing and narrowing Copilot Studio security controls before rollout, rather than after an incident, is consistently the highest-leverage step available.

2. Extend the same scrutiny to CRM-embedded AI features

CRM platforms have added AI agent capabilities directly into workflows that already touch customer and financial data. Reviewing Salesforce AI governance settings with the same rigor applied to a standalone AI deployment closes a gap that is easy to overlook simply because the AI feature lives inside a familiar, already-trusted system.

3. Apply consistent audit logging across every AI-enabled platform

Audit logging that only covers some AI-enabled platforms creates blind spots at exactly the boundary attackers look for. Extending consistent logging to ServiceNow AI governance workflows, alongside better-monitored platforms, keeps the audit trail continuous rather than fragmented by system.

4. Don’t treat RPA-driven agents as a separate, lower-priority category

Automation platforms built for citizen developers often run with elevated service-account permissions by default. Applying the same review standard to UiPath security for citizen developers that gets applied to newer generative AI deployments avoids a gap that opens simply because the technology predates the current AI security conversation.

5. Validate inputs the copilot processes, not just the copilot’s own configuration

A well-configured copilot can still be manipulated through the documents, emails, or tickets it is asked to summarize or act on. Input validation needs to account for instructions embedded inside that content, not just the copilot’s own settings.

This distinction matters because most security reviews stop at configuration. They confirm the copilot has the right permission scope and the right access controls, then treat the review as complete. That leaves the content the copilot processes every day almost entirely unexamined, even though it is the most common path an attacker actually has into the system.

6. Monitor behavior continuously rather than relying on a launch-time review

A copilot’s risk profile is not fixed at deployment. Permissions get modified, integrations get added, and underlying models get updated. Continuous monitoring is what catches drift between how the copilot was reviewed and how it is actually being used months later.

In practice, this is the control most organizations plan to add eventually and never quite prioritize, largely because launch-time review produces a clear pass or fail while ongoing monitoring requires sustained attention with no single moment of completion. That is exactly why it tends to be the gap attackers rely on most.

Illustrative emphasis levels across common control categories reviewed for enterprise AI copilots and automation platforms. General pattern, not a benchmarked audit result.

How six core security controls typically apply across different categories of enterprise AI copilots and automation tools. General guidance, not a vendor-specific audit.

Bar chart showing illustrative emphasis levels across five common security control categories reviewed for enterprise AI copilot and automation platforms.

Control Category AI Copilots in Productivity Suites CRM-Embedded AI Agents ITSM AI Assistants RPA / Automation Platforms
Permission scoping High priority High priority Medium priority High priority
Audit logging depth Often inconsistent Improving Often inconsistent Frequently overlooked
Input validation for embedded content Critical Critical Medium priority Medium priority
Runtime behavior monitoring Emerging practice Emerging practice Emerging practice Frequently overlooked

 

Where This Leaves Security Teams

None of these six practices is unique to a single vendor or platform category. What varies is how consistently each one gets applied once an organization has more than one type of AI copilot or automation tool in production. Treating all of them, generative copilots and older RPA platforms alike, against the same six-practice baseline tends to close the gaps that show up when one category gets more security attention than another simply because it is newer or more visible.

Frequently Asked Questions

Are RPA platforms less risky than generative AI copilots?

Not inherently. RPA and automation platforms often run with elevated service-account permissions and can be overlooked in security reviews simply because they predate the current wave of generative AI tools, which can leave real gaps if they are treated as lower priority.

What is the most overlooked security control for enterprise AI copilots?

Runtime behavior monitoring is commonly the most overlooked, since most security reviews still focus on configuration at launch rather than ongoing behavior after the copilot has been in use for a while.

Do CRM-embedded AI agents need a separate security review from standalone AI tools?

Yes, in practice they often need dedicated attention because they are embedded inside a system that is already trusted and already touches customer and financial data, which can make new AI features an afterthought in the review process.

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The Best Ways to Digitize Analog Film Without Losing What Made It Analog

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Archives sitting on shelves of negatives, glass plates, and slides face a quiet but real deadline: analog film degrades, and every year that passes without digitization is a year closer to information loss that cannot be undone. The good news is that film digitization has matured well beyond the flatbed scanners most people picture. Here is an honest look at the main approaches available to an institution weighing this decision today, and where each one actually fits.

Flatbed scanning: the familiar starting point

Flatbed scanners are the most widely available option and the lowest barrier to entry, which is exactly why so many small archives start here. The tradeoff is speed and, at scale, consistency. Each frame is captured through a slow, mechanical pass, and results can vary depending on how consistently an operator loads and positions material. For a modest personal collection or a small batch of prints, this is often perfectly adequate. For a collection running into the thousands or tens of thousands of frames, the math stops working: the time cost compounds quickly.

Drum and virtual drum scanners: higher quality, higher overhead

Drum scanners have long been considered a high-quality option, particularly for capturing fine tonal detail in transparencies, and virtual drum scanners attempt to replicate that quality without the physical drum. Both, however, remain fundamentally slow, point-by-point or line-by-line capture methods. They also tend to require more specialized operator skill and ongoing maintenance than either flatbed or camera-based systems, which raises the effective cost per image once staff time is factored in alongside the equipment itself.

Camera-based digitization: built for volume without giving up quality

The more recent shift in serious archival digitization has been toward camera-based systems: a high-resolution digital sensor paired with a dedicated film capture stage, specialized film and glass-plate carriers, and copy-stand hardware, all built specifically to hold negatives, transparencies, and plates flat and properly illuminated during capture. Because the entire frame is captured in a single, near-instant exposure rather than built up progressively, throughput increases dramatically. One documented high-volume digitization workflow using an iXG camera system reports capture rates fast enough to process a full frame in a fraction of a second, cited as roughly 400 times faster than flatbed, drum, or virtual-drum scanning for comparable material.

Bar chart comparing relative capture speed of flatbed, drum, and camera-based film digitization methods.

Relative capture speed by film digitization method, camera-based digitization compared with flatbed and drum scanning.

Does faster mean lower quality?

This is the question every archivist asks first, reasonably so, and the answer depends entirely on whether a program follows recognized technical benchmarks. Standards such as those maintained by the Federal Agencies Digital Guidelines Initiative, widely referred to as FADGI, and the Dutch Metamorfoze guidelines exist precisely to give institutions an objective way to verify image quality regardless of which capture method produced it. A camera-based system built around flat-field optics, precise focus tools, and accurate color profiling can meet the same three- and four-star quality benchmarks that a slower method targets, while doing it in a fraction of the time. Speed and quality are not automatically in tension; the real variable is whether the equipment and workflow were designed to hold quality steady at higher throughput.

What should actually drive the decision?

  • Collection size: small, occasional digitization jobs rarely justify the cost of a dedicated camera-based setup, while collections in the thousands of items usually cannot avoid it on a cost-per-image basis.
  • Material variety: mixed collections containing negatives, glass plates, slides, and bound volumes benefit from a modular setup that can switch between capture stages rather than requiring separate dedicated machines for each format.
  • Compliance requirements: institutions submitting digitized material to federal, academic, or museum standards need to confirm their chosen workflow can actually document and pass the relevant FADGI or Metamorfoze star rating, not just claim high resolution.
  • Staff capacity: drum and virtual drum scanning generally demand more specialized, ongoing operator expertise than a well-designed camera-based workflow, which matters for institutions without a dedicated imaging technician on staff.

There is no universally correct answer here, only a correct answer for a given collection’s size, format mix, and compliance needs. What has changed in recent years is that the fastest option is no longer automatically the lowest-quality one, which means the old tradeoff between speed and archival integrity is far less absolute than it used to be.

Frequently Asked Questions

Is camera-based film digitization actually faster than scanning?

Yes, documented workflows report camera-based capture running at roughly 400 times the speed of flatbed, drum, or virtual-drum scanning for comparable material, since the full frame is captured in a single exposure.

Does faster film digitization mean lower image quality?

Not inherently. Quality depends on whether the equipment and workflow are built to meet recognized benchmarks such as FADGI or Metamorfoze star ratings, regardless of the capture method used.

What type of archive benefits most from camera-based digitization?

Larger or mixed-format collections, such as those combining negatives, glass plates, and slides, generally see the greatest benefit, since a modular camera-based setup can switch between formats without separate dedicated machines.

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7 Signs Your AI Guardrails Won’t Survive Contact With Agentic Systems

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Bar chart comparing the latency of a general purpose language model used as a safety classifier against a purpose built guardrail model

Two years ago, a guardrail conversation was mostly about content filtering: stop the chatbot from saying something toxic. The model produced text, the text was safe or it was not, and a classifier could usually tell. In 2026 the problem changed shape, because the model is no longer just producing text. It is calling APIs, querying databases, writing files, sending emails, and triggering workflows. A guardrail failure two years ago meant a bad response. A guardrail failure today can mean a bad action: data deleted, funds transferred, privileged information forwarded to the wrong recipient. Here are seven signs an enterprise’s guardrail approach has not caught up to that shift.

  1. Guardrails only inspect the chat interface

If the only place content is being checked is the conversational turn between user and model, agentic workflows are moving around that checkpoint entirely. Tool calls, intermediate outputs passed between chained steps, and data pulled from connected systems all need coverage, not just the visible chat window.

  1. There is no human checkpoint on irreversible actions

Database deletions, external data transfers, financial transactions, and bulk record modifications are operations where a mistaken or manipulated instruction can cause damage that is difficult or impossible to reverse. Enterprises that have not annotated their AI tools by risk level, and built approval flows for anything tagged destructive, are relying entirely on the model getting it right every time.

  1. The guardrail is a prompted general purpose model

Prompting a general purpose model to act as its own safety classifier is the fastest way to prototype a guardrail, and it is also the slowest one to run in production. The chart below shows why that tradeoff matters once guardrails sit inside an agent’s decision loop rather than at the end of a conversation.

Bar chart comparing the latency of a general purpose language model used as a safety classifier against a purpose built guardrail model

Illustrative figures based on reported benchmark ranges for general purpose models prompted as classifiers versus purpose built guardrail models, 2026.

  1. Policies are generic instead of specific to the workflow

Out of the box guardrails ship with a fixed taxonomy covering hate speech, violence, sexual content, and basic PII. That is fine for a generic chatbot. It is not fine for a workflow that needs to enforce specific regulatory language, recognize an organization’s own confidential project names, or apply industry-specific rules no generic model has ever seen. Generic guardrails catch generic problems and miss the ones that actually matter to a given business.

  1. There is no governance layer over employee AI usage

Guardrails on a single deployed application do nothing for the AI tools employees adopt on their own. Consistent governance over employee AI tool usage across sanctioned and unsanctioned tools alike is what turns a guardrail policy from something that applies to one system into something that actually reflects how AI is used across the organization.

  1. Nobody has adversarially tested the guardrail itself

A guardrail that has only been validated against the cases it was designed to catch will fail the first time it meets an adversarial input it was not trained on. Open source community-standard guard models, for example, see measurable accuracy drops under adversarial pressure and on long context traces compared to their baseline performance. Red teaming the guardrail, not just the underlying model, is what closes that gap before an attacker finds it.

  1. Governance is only 25 percent implemented, if that

According to a 2025 industry survey, only about 25 percent of companies report a fully implemented AI governance program, even as 88 percent of organizations say they use AI in at least one business function. That gap between usage and governance is exactly where the enterprise AI security risks CISOs are already tracking tend to surface first, since guardrails without an underlying governance program are enforcing rules nobody has actually agreed on organization-wide.

What closing these gaps actually requires

The pattern across all seven signs is the same: guardrails designed for a single conversational turn do not generalize to a system that acts. Closing the gap means covering tool calls and not just chat, gating irreversible actions behind human review, using purpose-built models fast enough to run inline, tailoring policy to the specific workflow, extending governance to tools employees adopted informally, adversarially testing the guardrail itself, and treating all of it as a program rather than a one-time deployment. A recent look at how enterprises are approaching the related discipline of preventing AI data leakage is worth reading alongside guardrail planning, since the two controls typically need to work together

Frequently Asked Questions

Are guardrails the same thing as AI governance?

No. Guardrails are the runtime controls that catch or block specific behaviors. Governance is the broader program, ownership, policy, and accountability structure that decides what those controls should actually enforce.

Why do agentic systems need different guardrails than chatbots?

Chatbots produce text a human reads before acting on it. Agents can take the action directly, so a guardrail failure has a much larger and sometimes irreversible blast radius, which changes both what needs to be checked and how fast the check needs to run.

What is the fastest way to test whether current guardrails are sufficient?

Red team them the same way the underlying model would be tested, using adversarial examples specific to the organization’s actual policies and workflows rather than relying only on the vendor’s published benchmark results.

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