Variable RF/Microwave Delay Line Module

Turn-Key solution for all applications

This RF-Photonic Time Delay system is customized to achieve high bit resolution of true time delay in input RF signal. This system is composed of RF-photonic and photonic-RF conversion module, switchable fiber optic delay module as well as the optical amplification. The RF modulated laser beam is switched to pass through N fiber segments, therefore providing N-bit resolution of digitally variable time delay. The fiber optic amplifications are used in this module to compensate optical loss through optic fiber segments and switches.
The system has built-in temperature sensors and the capability to initially check the switchable delay segments through USB interface. All high repeat rate of switching will be controlled by the external TTL signals through D connector.

Variable RF/Microwave Delay Line Module

This RF-Photonic Time Delay system is customized to achieve high bit resolution of true time delay in input RF signal. This system is composed of RF-photonic and photonic-RF conversion module, switchable fiber optic delay module as well as the optical amplification. The RF modulated laser beam is switched to pass through N fiber segments, therefore providing N-bit resolution of digitally variable time delay. The fiber optic amplifications are used in this module to compensate optical loss through optic fiber segments and switches. The system has built-in temperature sensors and the capability to initially check the switchable delay segments through USB interface. All high repeat rate of switching will be controlled by the external TTL signals through D connector.
Optic Delay Line Module   Min Typical Max Unit
Wavelength band    1520 1550     1580 nm
1280 1310 1340 nm
Insertion Loss[1] 4.0 4.5 dB
Cross Talk      22 28 dB
Switching Time(fall, rise) CL 50 200 µs
NS 100 ns
MEMS 10 ms
Repetition Rate 0.05 1000 KHz
Delay Time Range n m s
Polarization Dependent Loss 0.25 0.45 dB
Polarization Mode Dispersion 0.1 0.2 ps
Return Loss 50 55 dB
Operating Temperature 0 60 oC
Optical Power Handling     400 mW
Storage Temperature -40 85 oC

Note:

[1].For 4 bits with time delay < 1 µs.

Optical amplification option is available for long fiber

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