Solid State Variable Photonic Time Delay Module

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The SSTD Series Photonic Time Delay Module selectively routes optical signals through N fiber segments whose lengths increase successively by a power of 2. The module therefore provides N bit resolution of digitally variable time delay with a maximum delay time defined by customer. This is achieved using a patented non-mechanical optical switching configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The solid-state configuration eliminates the need for mechanical movement and organic materials. The module has an input fiber and an out fiber.  Front panel LEDs indicates the chosen fiber loops in each operation state. PM and high power versions are also available.

  • High Resolution
  • High Speed
  • Large Time Delay Range
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Low Power Consumption
  • Phase-Array Antennas
  • Instrumentation
SSTD Series Photonic Delay Line 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) 50 200 µs
Repetition Rate 1 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
Fiber Type Corning SMF-28
Package Dimension[2] (L)480x(W)340X(H)43 mm
Note: [1].For 4 bits. [2]. Only for time delay < 1 µs.
P/N: N/A