Optical amplifier with low crosstalk and component including thi

Details Optical amplifier with low crosstalk and component including thi Optical amplifier with low crosstalk and component including thi

1996-08-21

1997-08-05

Hellner, Mark

Optical: systems and elements

Optical amplifier

Particular active medium

359337, 372102, H01S 300, H01S 308

Patent

active

056548222

ABSTRACT:
A semiconductor substrate includes an active waveguide to guide optical signals to be amplified occupying signal channels within a gain band of the waveguide. A stabilizer system comprises two Bragg reflectors tuned to a resonant wavelength in the gain band but outside the signal channels. It includes a gain segment in a resonant cavity. Two rejector Bragg reflectors sandwiching the resonant cavity between them are tuned to the resonant wavelength. Applications include telecommunication systems.

REFERENCES:
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patent: 5321718 (1994-06-01), Waarts et al.
patent: 5323404 (1994-06-01), Grubb
patent: 5349602 (1994-09-01), Mehuys et al.
patent: 5541766 (1996-07-01), Mizrahi et al.
patent: 5550671 (1996-08-01), Simpson et al.
J. F. Massicott et al, "1480nm pumped erbium doped fibre amplifer with all optical automatic gain control", Electronics Letters, vol. 30, No. 12, Jun. 9, 1994, Stevenage, GB, pp. 962-963, XP002001978.
R. Kashyap et al, "Wavelength Flattened Saturated Erbium Amplifier Using Multiple Side-Tap Bragg Gratings", Electronics Letters, vol. 29, No. 11, May 27, 1993, Stevenge, GB, pp. 1025-1026, XP0003729636.
L. F. Tiemeijer et al, "Reduced Intermodulation Distortion in 1300 Nm Gain-Clamped MQW Laser Amplifiers", IEEE Photonics Technology Letters, vol. 7, No. 3, Mar. 1, 1995, NY, US, pp. 284-286, XP000510272.
Patent Abstracts of Japan, vol. 018, No. 326 (E-1565) Jun. 21, 1994, corresponding to JP-A-06 077571 (Nippon Telegr & Telph Corp) dated Mar. 18, 1994.

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