Patent · US Expired

Polarization-dependent optical fibre amplifier

US7120339B2 · kind B2 · utility

5Cited by
2References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 25, 2003
Grant dateOct 10, 2006
Priority date—
Expiry dateSep 25, 2023

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01S3/06712
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical fibre including a waveguide and at least one stress applying region is described. The waveguide is defined by a numerical aperture, and the stress applying region is defined by a depressed refractive index. The optical fibre is configured such that the waveguide supports at least two polarised fundamental modes, two polarized first second-order modes, and two polarised second second-order modes. The waveguide includes comprises a gain medium. The stress applying region, the waveguide and the disposition of the gain medium are such as to provide preferential guidance to at least one of the modes at an operating wavelength.

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