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Fiber Optic Circulators

   An optical circulator is a component that can be used to separate optical power that travels in opposite directions in one single fiber. An optical circulator is a three-port device that allows light to travel in only one direction from port 1 to port 2, then from port 2 to port 3. Gould offers single mode fiber optic circulators with low optical loss, high isolation and low polarization dependent loss (PDL).
 Fiber Optic Circulators Features
  • Low Optical Loss
  • High Isolation
  • Low Polarization Dependent Loss
  • Telecom
  • Biomedical
  • Oil and Gas
  • Laser Applications
  • Instrumentation
  • Test and Measurements

Optical Specifications
Port Number 3 Ports 4 Ports
Wavelength 1310,C,L C+L C
Insertion Loss1
(Λc,23°C, all SOP) (dB)
0.8 (Grade P); 0.9 (Grade A)
Isolation (Λc,23°C, all SOP) (dB) ≥ 40 ≥ 40 ≥ 40
Isolation (Over all Λ, T,SOP)(dB) ≥ 35 ≥ 30 ≥ 35
PDL (dB) 0.1 (Grade P);
0.15 (Grade A)
0.15 (Grade P);
0.20 (Grade A)
Return Loss (dB) ≥ 50
TDL (dB) ≤0.2
WDL (dB) ≤0.2 (1310nm/C Band/L Band);
≤0.4 (C+L Band)
PMD (ps) ≤0.05
Input Optical Power (mW) < 500
Directivity (dB) ≤-50
Operation Temperature(°C) 0 - +70
Storage Temperature(°C) -40 to +85
Package (mm) Ø5.5 X 50L Ø5.5 X 64L
1. Insertion Loss doesn't include connector loss

Ordering Information

Fiber Optic Circulators
  • Specifications are based on non-connectorized products. For connectorized specifications, please contact sales for details. Custom optical & mechanical configurations are available upon request.
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