CrystaLatch™ 4×4 PM Optical Switch

  • Non-Blocking
  • High Speed
  • High Reliability
  • Fail-Safe Latching
  • Low Insertion Loss
  • Rugged
  • Compact
  • Direct Low Voltage Drive

Click 'Spec Sheet' for available configurations/part#


The CrystaLatchTM  (CL) type 4×4 fiber optic switch connects optical channels by redirecting any incoming optical signal into any selected output fiber. This is achieved using patented non-mechanical configurations and activated via an electrical control signal. It is a truly non-blocking switching matrix. Latching operation preserves the selected optical path after the drive signal has been removed. The all solid state CL 4×4 fiber optic switch features low insertion loss, high extinction ratio, high channel isolation, and extremely high reliability and repeatability.

It is designed to meet the most demanding switching requirements of continuous operation without failure, longevity, operation under shock /vibration environment and large temperature variations, and fast response time.


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CL Series 4x4 Switch Min Typical Max Unit
Operation Wavelength [1] 1520 1550 1580 nm
1295 1310 1325 nm
Insertion Loss [2] 1.5 2.8 dB
Cross Talk 30 dB
Switch Speed (Rise, Fall) 50 200 µs
Repetition Rate 2K Hz
Durability   1011 cycle
Polarization Dependent Loss 0.1 0.3 dB
Polarization Mode Dispersion 0.2 ps
Return Loss [2] 50 dB
Operating Temperature 0 70 oC
Storage Temperature -40 85 oC
Optical Power Handling [3]      300  500 mW
Switch type           Solid-State Latching
Fiber Type               Corning SMF28
[1]. L band version available, please call [2]. Measured without connectors [3]. High power version available.