Solid State Variable Optical Time Delay

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0 to 22ps range with 4 bit resolution

The SSTD Series Photonic Time Delay selectively routes optic signal through N delay segments whose delay time increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a delay segment, a delay T may be inserted that can take any value, in increments of DT, up to the maximum value T. This is achieved using patent pending non-mechanical configurations and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. All solid-state configurations eliminates the need for mechanical movement and organic materials. The device is designed to meet the most demanding switching requirements of ultra-high reliability and fast response time.

  • 4-Bit Resolution or more
  • High Speed
  • Non-Mechanical
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Low Power Consumption


  • Phase-Array Antennas
  • Instrumentation
SSTD Series Photonic Delay LineMinTypicalMaxUnit
Wavelength band   15201550    1580nm
Insertion Loss12.52.83.5dB
Cross Talk    222835dB
Switching Time(fall, rise)50200s
Repetition Rate1KHz
Delay Time Range for 1∆T122ps
Polarization Dependent Loss0.150.350.45dB
Polarization Mode Dispersion0.10.2ps
Return Loss505560dB
Operating Temperature060oC
Optical Power Handling    400mW
Storage Temperature-4085oC
Fiber TypeCorning SMF-28
Package Dimensionmm


P/N: N/A