1310/1550nm SM Single-Stage Optical Isolator

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The OISM Series 1310/1550 single stage optical isolator is a passive device that guides light at 1310/1550 nm in the normal direction while minimizing back reflection and back scattering in the reverse direction for any state of polarization. Employing Agiltron’s proven advanced micro optics design, it features low insertion loss, extremely high isolation, compact structure, and high stability. These Telcordia-qualified components have excellent characteristics, making them an ideal choice for application in fiber amplifier systems, pump laser diodes and optical fiber sensors.


  • Low Insertion Loss
  • High Isolation
  • Low PDL
  • High Reliability
  • Low Cost


  • Optical Fiber Amplifier
  • Pump Laser Source
  • Fiber Optic Sensor
  • Instrumentation


OISM Single Stage Specification Unit
Operation Wavelength (lo) 1310 1310 ± 15 nm
C Band 1550 ± 15
L Band 1585 ± 15
Typical Insertion Loss (lc, 23oC, no connector) ≤ 0.3 dB
Maximum Insertion Loss (Over lo, 23oC, no connector) ≤ 0.5 dB
Minimum Isolation (Over lo, 23oC) ≥ 30 dB
Typical Peak Isolation (lc, 23oC) ≥ 41 dB
Polarization Dependant Loss ≤ 0.1 dB
Polarization Mode Dispersion * ≤ 0.2 ps
Return Loss (Minimum, Input/Output) ≥ 60 dB
Operating Temperature -5 ~ +70 oC
Storage Temperature -40 ~ +85 oC
Optical Power Handling ≤ 400 mW
Package Dimensions Æ5.5 x L34 or

Æ3.0 x L30

  * Special order for PMD ≤ 0.05ps with compensator


P/N: N/A