Bypassable/Switch Optical Circulator 1310nm & 1550nm

  • Solid-State High Speed
  • Low Insertion Loss
  • High Isolation
  • Fail-Safe Latching
  • Non-Mechanical
  • Compact & Rugged
  • Direct Low Voltage Drive



The CL Series bypassable Optical circulator works in either circulator mode or bypass mode. In the circulator mode, it works as a regular 3 port circulator, light entering port 1 passes out through port 2, and light entering port 2 passes out through port 3. In the bypass mode, light entering port 1 will output through port 3 bypassing port 2.  Switching between these two working modes is activated via an electrical control signal. This is achieved using patent pending non-mechanical configurations, which also features Latching operation that preserves the selected working mode after the drive signal is removed. The all solid sate bypassable circulator features low insertion loss, high channel isolation, fast switching speed and extremely high reliability and repeatability.


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Parameter Min Typical Max Unit
Operation Wavelength 1520    1550 1570 nm
Insertion Loss1 0.8 1.2 dB
  Isolation 40 50 dB
  Directivity 40 50 dB
Switch Speed (rise, fall) 50 200 µs
Repetition Rate 2K Hz
Durability   1011 cycle
Polarization Dependent Loss 0.1 0.2 dB
Polarization Mode Dispersion 0.2 ps
Return Loss      50 dB
Operating Temperature 0        70 oC
Optical Power Handling2      300 mW
Storage Temperature      -40        85 oC
Fiber Type  Corning SMF28 or equivalent
Package Dimension      (L)61.5x(W)8.4x(H)8.4 mm
  1. Measured without connectors
  2. High power version available.