Optical amplifier

Details Optical amplifier Optical amplifier

1996-05-14

1998-03-10

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

259163, G02B 630, H01S 319

Patent

active

057267960

ABSTRACT:
In the optical amplifier designed as a bidirectionally operating IOC module for use in optical broadband systems, two spatially separated, erbium-doped active waveguides (16, 30) are integrated on a silicon substrate (1), and have different amplification factors. A hybrid integrated pump-light source (2) feeds a coupler (3) with an asymmetrical power distribution, e.g. 10% to 90%. The portion of pump light with the greater power is supplied via a coupler (6), together with the signal light coming from a first amplifier connection (9, 10), to a first active waveguide (16), and the portion of the pump light with the lower power is supplied via another coupler (24), together with the signal light coming from a second amplifier connection (9, 22), to a second active waveguide (30), and to the first amplifier connection through a coupler (12).

REFERENCES:
patent: 5128801 (1992-07-01), Jensen et al.
patent: 5194917 (1993-03-01), Regener
patent: 5383051 (1995-01-01), Delrosso et al.
patent: 5393371 (1995-02-01), Chang et al.
patent: 5414549 (1995-05-01), Nishimura et al.
"Bidirectional Fiber Amplifiers", C. Barnard et al., IEEE Photonics Technology Letters, vol. 4, No. 8, Aug. 1992, pp. 911-913.
Patent Abstracts of Japan JP 3071115 dated 03/26/91 vol. 15, No. 234 & Japanese Patent Application JP 890206937, filed Aug. 11, 1989 to Nippon Telegr & Teleph. Corp.
"Bidirectional Fiber Amplifiers", C. Barnard et al, IEEE Photonics Technology Letters, vol. 4, No. 8, Aug. 1992, pp. 911-913.
"Planar Waveguide Lasers and Amplifiers", Light,vol. 2, No. 2, Oct. 1994, Optoelectronic Research Center, University of Southhampton.

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