MEMS Variable Photonic Time Delay Line

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The MEMS Series Photonic Time Delay digitally varies the delay time inside a fiber with exceptionally large range (maximum delay) and precision (bit). It selectively routes optical signals through N fiber loops whose lengths increase successively by a power of 2. Since each switching element allows the signal to either pass or bypass a fiber loop, 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 MEMS configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The device is designed to meet the most demanding switching requirements of ultra-high reliability, vibration insensitivity, and low power consumption. It is a completed module with built-in driver.

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  • High Speed
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Low Power Consumption

 

  • Phase-Array Antennas
  • Instrumentation

 

MEMS Series Photonic Delay Line Min Typical Max Unit
Wavelength Band 780 1550 2000 nm
 Insertion Loss[1] 3 4.5 dB
Cross Talk       40 50 dB
Switching Time(fall, rise) 2 10 ms
Delay Time Range n m s
Polarization Dependent Loss 0.1 0.2 dB
Polarization Mode Dispersion 0.1 0.2 ps
Return Loss 50 55 60 dB
Operating Temperature -5 70 oC
Optical Power Handling     400 500 mW
Storage Temperature -40 85 oC
Package Dimension[1] 35L x 20W x 8.5H mm

Notes:

[1]. For 4 bits.