Solid State Variable Optical Time Delay

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0 to ms range with 5 bit resolution

The SSTD Series Photonic Time Delay selectively routes optical signals through N fiber segments whose lengths increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a fiber segment, a delay T may be inserted, which can take any value (in increments of DT) up to the maximum value T. This is achieved using a patent pending non-mechanical 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 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)50200µs
Repetition Rate1KHz
Delay Time Rangenms
Polarization Dependent Loss0.150.250.45dB
Polarization Mode Dispersion0.10.2ps
Return Loss505560dB
Operating Temperature060oC
Optical Power Handling    400mW
Storage Temperature-4085oC
Fiber Type and LengthCorning SMF-28, Length >1m


P/N: N/A