ODL solutions

Navigating the Labyrinth of Optical Delay Line Design – From Concept to Custom Solution

Detailed view of K-Band Optical Delay Line interfaceAs RFOptic, we offer our customers 4 groups of products, namely  RFoF off-the-shelf links, subsystems, Optical Delay Lines, and customized systems. In this blog post, we will focus on Optical Delay Lines and their intricacies.  We have a proven track record in various industries, including telecommunications, aerospace, and defense. RFOptic’s optical delay lines are known for their high-performance thanks to our cutting-edge technology combined with a customer-centric approach. This means that RFOptic’s optical delay lines (ODLs) meet the most stringent requirements for accuracy, reliability, and performance.

ODL is a customized solution engineered to replicate real-world propagation delays, which addresses the need to simulate distance with precision for communication and testing. However, designing an ODL isn’t an easy, one-size-fits-all endeavor. On the contrary, it requires taking numerous parameters into account to achieve optimal performance. Let’s delve into the intricacies of ODL design, from initial requirements to a tangible proposal.

Understanding the Core Parameters

Before everything else, it’s essential to understand the specific requirements and needs of the customer to define the parameters.

These parameters encompass:

  1. Number of Delay Lines
    The number of delay lines is the
    foundation of the ODL. Since it’s a progressive method, the customer needs to define the core delay lines. For example, 4 delay lines can create a remarkable 15 distinct delay states through intelligent optical switching combinations. This allows for fine-grained control and a wide range of simulated distances.
  2. Zero Delay (Minimum Internal Delay)
    The zero delay represents the inherent delay within the ODL, even before the defined delay lines are engaged. It’s directly influenced by the number of delay lines and the internal architecture of the device.
  3. Optical Switching Speed
    In dynamic applications, rapid switching between delay states is crucial. This parameter defines the speed at which the ODL can transition between different delay values, impacting real-time simulation capabilities,
  4. ODL Gain and Output Signal
    Maintaining signal integrity is essential. This parameter dictates the amplification or attenuation of the optical signal as it passes through the ODL, ensuring a strong and clear output.
  5. Gain Control
    For applications that require precise signal level adjustments, gain control is a vital feature. This allows for dynamic optimization of the output signal strength.
  6. Frequency
    The operating frequency of the optical signal significantly impacts the design and performance of the ODL. Different frequencies require specialized components and configurations.
  7. Control Method
    The ODL will be controlled and interfaced with, so the control method is an important parameter. Options range from simple manual controls to sophisticated software interfaces, depending on the complexity of the customer’s application.
  8. Other Important Parameters
    These are parameters that relate to a wide range of application-specific requirements, such as physical dimensions, doppler module, and specific optical connectors.

Simplifying the Design Process with RFOptic

Now that we have gotten a glimpse of the complexity of ODL design, let’s see how RFOptic can help simplify the process using its intelligent, streamlined approach. To make things easy for our customers, we have set up our online Request for Quote (RFQ) process (accessible at https://rfoptic.customcode.co.il/request-for-quote/) that helps to define the essential parameters, ensuring we at RFOptic capture our customers’ specific needs.

After submitting the filled out the Request for  Quote form, a technical consultation takes place to discuss the ODL project. Based on the collected information, RFOptic’s team leverages proprietary design tools to create a tailored ODL solution. This smooth path from design to implementation ensures that the customer receives the high-performance ODL that fits its requirements.

To summarize, designing a custom Optical Delay Line can be a complex undertaking, but with a clear understanding of the key parameters and the support of experienced professionals, customers can achieve a solution that delivers exceptional performance. Our streamlined design process and commitment to customer satisfaction make us the ideal partner for ODL design and implementation.

Want to learn more about RFOptic’s Optical Delay Lines? We have several resources available.

  • For various ODL data sheets, click here.
  • For white papers mentioning ODL applications, click here.
  • For FAQ about ODL, click here.
  • For our fun ODL quiz, click here.
  • To get a quote for a customized ODL design, click here

RFOptic’s progress in Asia

RF over Fiber & Optical Delay Line Solutions From RFOpticIn general, some Asia Pacific countries, led by China, India, Japan, and South Korea, are investing considerably in homeland security and defense applications. For the last few years, RFOptic has made significant progress in various markets in Asia. Based on our commercial success, we are looking forward to accelerating our growth across several key Asian markets this year. We will expand our footprint in the local EW & Defense and 5G testing sectors thanks to the increasing demand for advanced optical RF solutions. Let’s have a closer look at our progress in more detail, focusing on Japan, India, Vietnam, China, and South Korea.

Japan: A Promising Future
The Japanese market is experiencing robust growth, particularly in applications such as telemetry, remote antennas, and 5G technology. Thanks to the commitment and efforts of our local distributor, Fuchu, we have entered the Japanese market successfully. Following our success in the last few years, we anticipate tripling our local sales this year, mainly through repeat orders. We expect our recently launched Ultra 12GHz and 18GHz products to drive local demand.

To learn more about our Ultra 12GHz product solution, click here. To learn more about our Ultra 18GHz product solution, click here.

India: Strategic Partnerships and Expanding Projects
Following successful trials of our 6GHz phase-matched point-to-point and 18GHz four-channel demonstrations, RFOptic has been awarded two major projects. The first one is with the Defense Research and Development Organisation (DRDO). The second one consists of our optical RF solutions at millimeter wavelengths for maritime applications. To get a permanent foothold in this strategic market, we have been building cooperations with first and second-tier integrators. These strategic relationships allow us to provide e.g., our Government & Defense solutions to meet the growing demand from the defense sector.

To learn more about our customized RF over Fiber high SFDR for 5G mm-Wave active antenna arrays, contact us.

Vietnam: New Opportunities
As we mentioned in our previous blog post, Vietnam is emerging as a major player in the EW & Defense sector, also thanks to strong players such as the Viettel Group. There is especially a strong demand for optical delay lines and systems for RADAR altimeter testing. This was also evident at a recent exhibition where we were represented by our local partner s9 Technology JSC. Also, based on the success of this expo, we expect significant market growth as the demand for our innovative solutions, such as for our phase-matched CWDM multi-link RFoF, continues to rise.

To learn more about our Optical RF Electronic Warfare & Radar Systems, click here.

China: Continued Success and Repeat Orders
As RFOptic, we are also active in China. Our success record includes receiving a third consecutive order from the Radio Telescope Observatory in Shanghai. We supplied advanced 18GHz and 6GHz links, alongside our HTML management system. Our solutions for remote antenna applications in electromagnetic compatibility (EMC) have also resulted in repeat orders. With the launch or our Ultra product line, which is known for its compactness, lightweight design, and performance, we expect continued growth in this market. Other deployments include South African Radio Astronomy Observatory (SARAO) for the supply of broadband 18 GHz fiber optic links for its Hartebeesthoek Radio Astronomy Observatory (HartRAO) site, and the Onsala Space Observatory.

For more information about our RFOptic’s fiber optic solutions for Radio Telescope and Astronomy, click here.

Korea: A Key Market
Another rapidly growing market for us at RFOptic is South Korea. The main demand is for our optical delay lines and HSFDR product lines for defense and DAS applications. Due to the changing geo-political situation, we forecast a growing need for our off-the-shelf and customized solutions. Therefore, we consider South Korea, being an essential market, to play a crucial part in our overall growth strategy in Asia.

To learn more about our DAS solution, click here.

Other Markets: Significant CAGR Growth
The overall demand for RFOptic’s products highlights a strong compound annual growth rate (CAGR) across the Asian market, outpacing the global average. Our track record of providing creative, compact solutions and excellent support makes us the preferred choice. This positions us well to provide our 5G RFoF subsystems and Electronic Warfare & RADAR solutions in these important markets.

In conclusion, as RFOptic, we are looking forward to strengthening our presence in these dynamic markets even more. As always, our main focus will remain on developing and providing innovative solutions that meet our customers’ needs.

Our participation in IMS2024 was a great success!

In June, we participated for the first time in IMS2024. The IEEE MTT-S International Microwave Symposium is a yearly event. This year, it took place in the Walter E. Washington Convention Center in Washington, DC, offering exhibitors a chance to connect with 9,000+ members of the RF and Microwave community from across the globe.

At our booth, we showcased our RFoF & ODL solutions for Electronic Warfare & Radar, 5G testing, and DAS applications, attracting many visitors. We received visitors from all over the world representing government agencies, major system integrators, and commercial enterprises active in the 5G cellular, satcom, broadcast, government & defense, testing & measuring, and Electronic Warfare & Radar industries.

We talked to more than 100 visitors who left their details to be contacted after the show, which resulted in sending out several proposals for RFoF solutions.

Our live demo got a lot of attention from interested parties, who asked our experts detailed questions.

The show also gave us a good opportunity to meet some of our distributors to catch up. We had meetings with representatives from Municom GmbH, our distributor for Central Europe, Fusoh Shoji Co., Ltd. from Japan, Amtele Communication, our distributor for Scandinavia, Matech from France, and Mitron from China.

The show demonstrated that there is a growing demand for the type of RF over Fiber subsystems and solutions that we, as RFOptic, offer.

Our next participation in an international exhibition will be at the upcoming European Microwave Exhibition. EuMW 2024 will take place during September 24-26 in the Paris Convention Center, 1 place de la Porte de Versailles 75015 Paris. At the event, we will co-exhibit in booth 422b of the company MATECH. We will showcase our advanced solutions for RFoF & ODL solutions for Electronic Warfare & Radar5G testing, and DAS applications. If you are interested in setting up an appointment with our VP Mr. Oz Abramson, during the event, click here.

RFOptic has launched its new ODL enclosure with display

As mentioned in our latest newsletter, we have been very busy during Q1 of this year. Our R&D department has designed a new standard enclosure for our ODL solutions.

This new design features an informative display with a keypad that provides a clear readout of the ODL state and allows rapid manual adjustments. The manual controls are augmented with direct software control of all available features of the ODL. The management and control software is available through an USB interface with our standard RFOptic configuration tool, a special application that is dedicated to provide GUI to all RFOptic products including RFoF programmable links, RFoF HF series links, and ODL systems. By using an LCD and a 3-button navigation pad, it is now possible to control the system without any additional computer.

The new Optical Delay Line design supports a large set of features and custom options, including: Fixed and progressive delay configurations with 256 states or more with bandwidth up to 40GHz, and high-speed delay switching under 100μsec. Other features, such as RF and optical routing, amplification, and attenuation are available upon request. Currently, our optical delay lines are managed locally through the USB port or managed and controlled with our optical delay lines via our HTML/SNMP management system.

In general, we offer four groups of ODLs:

  1. Any type of fixed or progressive ODL of up to 6.0GHz with direct modulation (L, S, & C bands).
  2. Any type of fixed or progressive ODL of up to 8.0GHz – 18GHz with indirect modulation (L, S, C, X, & Ku bands).
  3. Any type of fixed or progressive ODL of up to 20GHz, up to 27GHz and up to 40GHz upon request.
  4. Altimeter Optical Delay Line(ALT ODL), providing a high-performance solution for testing and calibration of radar altimeter systems.

To read more about our ODL solutions, click here

RFOptic has launched its Altimeter Optical Delay Line

To meet the need of customers, we have launched our high-frequency Altimeter Optical Delay Line (ALT ODL) to provide a high-performance solution for testing and calibration of radar altimeter systems. The ALT ODL is part of the RFOptic’s family of Optical Delay lines.

RFOptic’s ALT ODL unit is a compact solution, which provides superb signal performance and altitude simulation accuracy with an ultra-silent operation.

The ALT ODL can be configured to emulate a single altitude or up to 4,096 altitude steps.

The Altimeter ODL offers very high accuracy up to 0.3ns for altitude steps under 6ft and > 0.1% above. The maximum altitude can reach 100,000 feet or 30Km in one enclosure.

For more information, please visit the RADAR Altimeter Test webpage and download the RADAR Altimeter data sheet.

Key Features:

  • Altitude range 1 to 100,000 feet
  • Display Delay, Round-trip Distance, Range or Altitude
  • Customizable Steps
  • Supports frequencies from DC up to 6 GHz
  • Pulse and CW
  • Delay accuracy of 0.1%
  • Customized solution with short delivery time
  • High Dynamic Range
  • Excellent Phase Noise
  • USB API for automated tests

Options:

  • RF and Optical bypass
  • DC Power
  • External Delay
  • Amplitude Control
  • Optical Power Meter
  • Built-in diagnostics

Monitoring:

  • Managed remotely by software or manually via a navigation switch

Applications:

Customers who are looking for life demo and would like to make a field trial are invited to contact RFOptic at sales@rfoptic.customcode.co.il

For general request, interested parties can also summit a contact form via our website rfoptic.customcode.co.il