Gain flattening device for an optical fiber amplifier

Details Gain flattening device for an optical fiber amplifier Gain flattening device for an optical fiber amplifier

2006-06-27

2006-06-27

Bovernick, Rodney (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling function

C385S037000, C359S337100

Reexamination Certificate

active

07068879

ABSTRACT:
A gain flattening device for an optical fiber amplifier. In the gain flattening device, a first end portion, having first and second ends, receives an amplified optical signal from a first amplification fiber via the first end. A second end portion, having third and fourth ends, outputs the amplified optical signal to a second amplification fiber via the fourth end. A first connector is included for connecting the first end to the third end. A second connector is included for connecting the second end to the fourth end. At least one reflective grating is further included with a predetermined gain curve at a predetermined wavelength band. An optical coupling portion couples the amplified optical signal from the first connector to the second connector in at least one coupling region where the first and second connectors are closer to each other than in any other area, and outputs part of the amplified optical signal reflected from the reflective grating via the second end.

REFERENCES:
patent: 5740292 (1998-04-01), Strasser
patent: 5805751 (1998-09-01), Kewitsch et al.
patent: 5953467 (1999-09-01), Madsen
patent: 6226428 (2001-05-01), Saito et al.
patent: 6496303 (2002-12-01), Fleming
patent: 6600595 (2003-07-01), Aida et al.

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