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High Reliability 1480/1550 nm WDM

For combining wavelength ranges of 1470–1480 nm and 1540–1555 nm in harsh environments such as undersea and space, where the costs of component replacement are prohibitive.

Full Product Description
Operating wavelength:
1480 nm band: 1470-1480 nm, C band: 1540-1555 nm
Optical power handling:
4 W
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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)


WavelengthPump: 1480 nm, Signal: C band
Insertion lossMax: 0.50 dB ¹ ⁵
WDLMax: 0.20 dB ²
PDLMax: 0.20 dB ³
TDLMax: 0.16 dB ⁴
Signal IsolationMin: 13 dB ⁶
Pump IsolationMin: 10 dB ⁷
Operating wavelength1480 nm band: 1470-1480 nm, C band: 1540-1555 nm
Return loss/directivity55 dB ⁸
Pigtail tensile load5 N ⁹
Optical power handling4 W
Operating temperature-10 – +70° C
Storage temperature-25° C – +85° C
Environmental qualificationComponent design to 0.1 FIT (Failures in billion hours)


¹ Insertion loss over operating wavelength range and component life – not including PDL, TDL (25 years, typical service/storage conditions 40°C/60% RH).
² Change in insertion loss over the operating wavelength range.
³ Change in insertion loss over all input polarisation states in signal wavelength range.
⁴ Change in insertion loss on signal path from -5 – 75ºC. Guaranteed by design.
⁵ Center wavelength tolerance for repeatability in system ±2 nm.
⁶ Insertion loss of signal light in pump path.
⁷ Insertion loss of pump light in signal path.
⁸ Return loss is the ratio of power launched to power reflected for port P1. Directivity for the 2x2 component is the ratio of power launched to P1 to the power reflected to P4. For 2x2 couplers return loss/directivity >60 dB and is guaranteed by design.
⁹ Stripped fiber proof tested on rig to confirm strength.

Order code

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