Patent ID: 6212002
Filing Date: 2001-04-03
Classification: H01S,H04B

Abstract:
An optical amplifying system comprising:a preamplifier further comprising:a pre wavelength division multiplexer (WDM), used to receive an optical signal;a pre optical gain media, coupled to the pre WDM and used to provide an optical gain of the optical signal; anda pre optical pumping source, coupled to the pre WDM and used to pump the optical gain of the optical gain media by exciting electrons from a lower energy level to a higher energy level;a Michelson interferometer (MI), coupled to the preamplifier so as to filter an amplified spontaneous emission (ASE) noise induced by the preamplifier and reflect the incident optical signal to a post amplifier, wherein a construction interference also occurs as the optical signal is reflected; andthe post amplifier further comprising:a post optical gain media, coupled to the MI and used for post amplifying the reflected optical signal;a post WDM, coupled to the post optical gain media so as to receive the used the reflected optical signal after post amplification and export the optical signal;a post optical pumping source, coupled to the post WDM and used to pump an optical gain of the post optical gain media by exciting electrons from a lower energy level to a higher energy level.