Optical preamplifier device having a wave length conversion devi

Details Optical preamplifier device having a wave length conversion devi Optical preamplifier device having a wave length conversion devi

1998-09-03

2000-09-12

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214R, H01J 4014

Patent

active

06118117&

ABSTRACT:
An optical preamplifier device for a light receiver, the device including a first optical amplifier. The first optical amplifier is coupled to an input of an optical filter centered around a fixed wavelength .lambda..sub.o via a wavelength conversion device for converting wavelength to the fixed wavelength .lambda..sub.o of the filter, thereby enabling the device to be made independent of the wavelength .lambda..sub.i of the signal.

REFERENCES:
patent: 4807227 (1989-02-01), Fujiwara et al.
B. Mikkelsen et al, "High Performance Semiconductor and Optical Amplifiers as in-Line and Pre-Amplifiers", Proceedings of the European Conference on Optical Communication (EC, Firenze, Sep. 25-29, 1994, vol. 2, No. Conf. 20, Sep. 25, 1994, pp. 710-713.
G. Soulage et al, "Clamped Gain Travelling Wave Semiconductor Optical Amplifier as a Large Dynamic Range Optical Gate", Proceedings ot he European Conference on Optical Communication (EC, Firenze, Sep. 25-29, 1994, vol. 1, No. Conf. 20, Sep. 25, 1994, pp. 451-453.

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