Multi-port coupler, optical amplifier, and fiber laser

Details Multi-port coupler, optical amplifier, and fiber laser Multi-port coupler, optical amplifier, and fiber laser

2007-05-30

2009-02-17

Doan, Jennifer (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S015000, C385S031000, C385S039000

Reexamination Certificate

active

07492993

ABSTRACT:
A multi-port coupler for coupling an pumping light source to a cladding pump fiber for optical amplification, includes a central signal fiber and a plurality of pumping fibers arranged around the central signal fiber, the central signal fiber and the plurality of pumping fibers being unified and a front side is reduced in diameter, wherein an emitted light confining waveguide part is provided around a core of the signal fiber located at the center, and the emitted light confining waveguide part whose outer diameter is larger than that of the core has a higher refractive index than a cladding and a lower refractive index than the core and the emitted light confining waveguide part is formed continuously from a splicing point of the cladding pump fiber to a coupler front end branched into multiple fibers.

REFERENCES:
patent: 5864644 (1999-01-01), DiGiovanni et al.
patent: 5898715 (1999-04-01), LeGrange et al.
patent: 5933271 (1999-08-01), Waarts et al.
patent: 5999673 (1999-12-01), Valentin et al.
patent: 7016573 (2006-03-01), Dong et al.
patent: 2005/0105854 (2005-05-01), Dong et al.
patent: 2006076524 (2006-07-01), None
patent: 2007107163 (2007-09-01), None

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