7-bit Solid State Time Delay

Features:
  • High Speed
  • Non-Mechanical
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Low Power Consumption

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SKU: SSTD

The 7-bit Solid State Series Fiber Optical Time Delay provides a variable time delay over a long range up to the millisecond.  This is accomplished by selectively routing 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 ∆T) 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.

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7-bit SS Series Time Delay Min Typical Max Unit
 Wavelength Band     1520 1550     1580 nm
   1280  1310 1340 nm
Insertion Loss [1], [2]    2.5 2.8 3.5 dB
Cross Talk       22 28 35 dB
Polarization Dependent Loss (SM) 0.15 0.25 0.45 dB
Polarization Extinction Ratio (PM) 18 22 30 dB
Return Loss 50 55 dB
Switching Time (fall, rise) 50 200 µs
Repetition Rate 1 KHz
Delay Time Range n m s
Fiber Segment Number 4 7 loop
Polarization Mode Dispersion 0.1 0.2 ps
Switch Type              Latching  
Operating Temperature -5  +70 oC
Storage Temperature -40   +85 oC
Optical Power Handling               300        500 mW
Fiber Type SM SMF-28, or equivalent
PM         PM1310/250, PM1550/250, or equivalent
Fiber Length                                  1 m

[1]. The IL is for 4-bit Delay Line.  IL Max value is 4.5 for 5-bit Delay Line, and 6.2 dB for 7-bit.

[2]. Excluding Connectors.