Variable Ultra-Short Optical Time Delay Line

0 to 300ps range with 4 ~ 5 bit resolution
  • 4-Bit Resolution or more
  • High Speed
  • Non-Mechanical
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Low Power Consumption


Click 'Spec Sheet' for available configurations/part#


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.


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SSTD Series Photonic Delay Line Min Typical Max Unit
Wavelength band    1520 1550     1580 nm
1280 1310 1340 nm
Insertion Loss1 2.5 2.8 3.5 dB
Cross Talk     22 28 35 dB
Switching Time(fall, rise) 50 200 s
Repetition Rate 1 KHz
Delay Time Range for 1∆T 1 22 ps
Polarization Dependent Loss 0.15 0.35 0.45 dB
Polarization Mode Dispersion 0.1 0.2 ps
Return Loss 50 55 60 dB
Operating Temperature 0 60 oC
Optical Power Handling     400 mW
Storage Temperature -40 85 oC
Fiber Type Corning SMF-28
Package Dimension mm