Product Documentation:

RF & Microwave Fiber Optic Delay Line System

EMCORE’s variable (progressive) Fiber Optic Delay Line System (DLS) offer superior performance for radar range calibration, ground-based system tests, radar warning receivers, timing control, path delay simulation, clutter canceller and phase shift discriminators. Delay lengths of up to 2,000 µsec are available along with a wide range of RF and optical performance options and packages.

The DLS provides convenient RF input / outputs that connect to an internal F/O transmitter, optical fiber, optical amplifiers (EDFAs), optical switches and F/O receiver. Internally, the RF signal is converted to an optical signal and transmitted over a fiber optic link to the receiver and provides the required signal delay time. Frequency range, delay length, and link performance requirements can be tailored over a wide range of performance levels to meet specific requirements.

EMCORE’s DLS offers several advantages over traditional coax or waveguide solutions with the technical advantage of EMCORE’s DLS delivering extremely low signal phase shift over temperature and time. This very important feature has been achieved by using special mechanical design and fiber spools packaging. The system is supplied as a complete solution with all modules mounted in 19” racks that use standard AC power. Packaging options include various rack configurations and temperature stabilized optical fiber.

A consultation with your EMCORE representative, or authorized EMCORE reseller is the 1st step in designing your system. Email Us, or call +1 609-439-5758 to request 60 GHz test data and a design consultation.


  • Up to 2000 µsec delays
  • Extremely low signal phase shift vs. time & Temperature
  • Modular design supports different time delay adjustments and RF requirements
  • 0.05 – 60 GHz bandwidth
  • Flat RF frequency response
  • Minimal triple-transit echoes
  • Low link loss options
  • Very low temperature sensitivity
  • RF amplified and unamplified versions available
  • Time delay can be configured/controlled and monitored remotely via SNMP
  • Proprietary application programmable interface (API software) allows automatic (via computer) time delays setting


  • Radar calibration and testing
  • Phase shift discriminators
  • Signal processing
  • Electronic Warfare (EW) systems
  • Radar warning receivers

RF & Microwave Fiber Optic Delay Line System