Patent ID: 6144487
Filing Date: 2000-11-07
Classification: H01S,H04B,H04J

Abstract:
An optical amplifying apparatus for amplifying an input wavelength multiplexed signal into an amplified output wavelength multiplexed signal, each of said input wavelength multiplexed signal and said amplified output wavelength multiplexed signal containing a plurality of optical component signals which have wavelengths different from one another, and each of which has an amplitude level, said optical amplifying apparatus comprising:an optical amplifier for amplifying said input optical wavelength multiplexed signal including said plurality of optical component signals into said amplified output wavelength multiplexed signal;an optical detecting circuit for individually detecting the amplitude level of at least one of the optical component signals, wherein each said amplitude level is selectively variable between each of said optical component signals; anda gain controller that controls said optical amplifier based on said amplitude level of only one of said at least one of the optical component signals such that said plurality of optical component signals are adjusted based on said amplitude level of said only one of the optical component signals.