Patent ID: 7253945
Filing Date: 2007-08-07
Classification: H01S

Abstract:
1. An optical amplification apparatus comprising: a polarizing beam splitter for reflecting a portion of an incident light and transmitting a remaining portion of the incident light, depending upon a polarized state of the incident light; an optical isolator receiving light from and transmitting light to the polarizing beam splitter, said optical isolator including a first polarizing plate for changing polarization states of the light traversing therethrough, and a stimulated brillouin scattering-phase conjugate mirror for reflecting the light that has passed through the first polarizing plate; and at least two optical amplification means that includes an upstream optical amplification means and a downstream amplification means, each of the optical amplification means including a second polarizing plate for changing polarization states of the light traversing therethrough, an amplitude division plate for amplitude-dividing the light having passed through the second polarizing plate, into first and second lights, and optical amplifiers including stimulated brillouin scattering-phase conjugate mirrors for respectively amplifying and reflecting the first and second lights which are amplitude-divided by the amplitude division plate, wherein the at least two optical amplification means are arranged in the shape of a chain such that the light outputted from the upstream optical amplification means is incident upon the polarizing beam splitter included in the downstream optical amplification means.