Skip to Content
Fiber-Optic Couplers (Hi Rel and SM) product image

High Reliability Polarization Beam Combiner

For PM combining of wavelengths between 915–1600 nm, where the costs of component replacement are prohibitive.

Full Product Description
Operating wavelength:
975 nm, 1550 nm ¹ ² ⁷
Optical power handling:
Max: 4 W ⁵ ⁶
Request a quote

Need a product customized?

We can customize our products to fit your requirements.

Find out more

Product description

Using our proven fused biconical taper process, our HI REL capability is built upon the foundation of the long-established manufacturing history of very reliable terrestrial components.

The ultra-low loss of our fused fiber components helps to promote low noise and improved system margin in undersea transmission systems.

Full facilities are available to perform customer-specific HI REL qualification programs, which can consist of accelerated aging and Weibull analysis. Our design standard is 0.1 FITs, meaning failure-free operation for one billion field hours.

Manufacturing is carried out on specially-developed workstations, and advanced fiber management, in-process screening, and customer-specific validation tests are implemented, to further enhance component reliability. Components are supplied in regular or custom housings, depending upon the installation environment.

Key features

  • High polarization extinction ratio (PER)
  • High Power Handling
  • Low loss
  • Design standard 0.1 FITs (failure in one billion field hours)


Operating wavelength975 nm, 1550 nm ¹ ² ⁷
Insertion loss(fast axis) Grade H, 975 nm: Max: 0.70 dB , 1550 nm: Typ: 0.70 dB ³
Insertion loss(slow axis) Grade H, 975 nm: Max: 0.55 dB, 1550 nm: Typ: 0.70 dB ³
Return loss/directivity50 dB Min ⁴
TDL(fast axis), 975 nm: Max: 0.20 dB. Typ: 0.10 dB, 1550 nm: TBD ⁴
TDL(slow axis), 975 nm: Max: 0.10 dB. Typ: 0.05 dB, 1550 nm: TBD ⁴
Pigtail tensile loadMax: 5 N
Optical power handlingMax: 4 W ⁵ ⁶
Fiber typeAll ports PM fiber
PigtailPrimary coated fiber
Operating temperature-5° C – 45° C
Storage temperature-40° C – 85° C

¹ The optical specification is typically met at center wavelength ±3 nm
² Other wavelengths are available. Please contact the G&H sales office.
³ Insertion loss at center wavelength (not including TDL or connector losses).
⁴ Limits guaranteed by design.
⁵ Where operation powers >4 W are required the component housing and fiber must be adequately heat-sunk (contact G&H sales to discuss high power options).
⁶ Component performance and reliability under high power must be determined within the customer system.
⁷ Optical specifications to be confirmed pending manufacturing test data.

Housing Options

Housing CodeDescriptionDimensions (mm)Pigtail
3Regular3.0 (∅) x 71 (L)Primary-coated fiber

For alternative housing options, please contact G&H sales.

Order code

Guidance on how to create an order code is available in Downloads below.