Amplifier/filter combination

Details Amplifier/filter combination Amplifier/filter combination

1992-02-28

1993-10-26

Scott, Jr., Leon

Coherent light generators

Optical fiber laser

372 69, 372102, 385 27, 385 37, H01S 330

Patent

active

052572730

ABSTRACT:
An amplifier/filter combination including a fibre amplifier (4) and a fibre reflection/transmission filter (5) coupled to said amplifer. The fibre amplifier amplifies an input signal (1) in response to pump light (2) received from a laser. Preferably the fibre filter (5) is a chirped Bragg fibre filter which is arranged to filter out the unabsorbed portion of the pump light from the output amplified signal and which reflects the unabsorbed portion (7) of the pump light back to the amplifier (4) for re-absorption therein. The amplified signal (6) is transmitted by the filter (5) to a receiver.

REFERENCES:
patent: 4358851 (1982-11-01), Scifres et al.
patent: 4723249 (1988-02-01), Ouhayoun
patent: 4881791 (1989-11-01), Mallinson et al.
patent: 4923271 (1990-05-01), Henry et al.
patent: 5048909 (1991-09-01), Henry et al.
patent: 5058977 (1991-10-01), Sorin
patent: 5134620 (1992-07-01), Huber

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