1310/1550nm Mini SM Dual-Stage Optical Isolator

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Ø 2.5 x L 17 mm

The OISM Series optical Isolator is a passive device that passes light in the normal direction while blocks light in the reverse direction for any state of polarization. Employing Agiltron’s advanced all glass micro optics design, it features ultra-low insertion loss, high power handling high isolation, ultra-mini structure, and high stability. The device is RoHS compliant and Telcordia qualified, an ideal choice for applications in fiber amplifiers, pump lasers and optical fiber sensors.

  • Low Insertion Loss
  • High Power Handling
  • Compact
  • High Reliability
  • Low Cost
  • RoHS Compliant
  • Low Cost


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


OISM Mini Dual Stage Specification Unit

Wavelength (lo)

1310 1310 ± 15 nm
C Band 1550 ± 15
L Band 1585 ± 15
Typical Insertion Loss (lc, 23oC, no connector) ≤ 0.45 dB
Maximum Insertion Loss (Over lo, 23oC, no connector) ≤ 0.50 dB
Minimum Isolation (Over lo, 23oC) ≥ 45 dB
Typical Peak Isolation (lc, 23oC) ≥ 55 dB
Polarization Dependant Loss ≤ 0.1 dB
Polarization Mode Dispersion ≤ 0.05 ps
Return Loss (Minimum, Input/Output) ≥ 55 dB
Operating Temperature -5 ~ +70 oC
Storage Temperature -40 ~ +85 oC
Optical Power Handling ≤ 1 W
Package Dimensions Ø 2.5 x L17 mm


P/N: N/A