Patent · US Active

Compact passive module for erbium and other fiber amplifiers

US7440163B1 · kind B1 · utility

6Cited by
8References
11Claims
0Family size

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Key dates

Filing dateNov 22, 2006
Grant dateOct 21, 2008
Priority date—
Expiry dateNov 22, 2026

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01S3/06754
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Techniques for designing optical devices with passive components for erbium and other doped fiber amplifiers are disclosed. In one aspect, all passive components needed to construct optical amplifiers of both single and multiple-stage forward or backward pumps are integrated without extensively using optical fiber splicing joints. One of the features is to use free-space optics for inter-function cascades among various necessary functions, such as one or more tap couplings, WDM filtering to multiplex (Mux) or de-multiplex (Demux) pump and signal lights, gain-flattening, pump isolation and even performing Mux and Demux of different polarizations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.