Patent ID: 6856456
Filing Date: 2005-02-15
Classification: H04B

Abstract:
1. An apparatus for transferring optical data between satellites, comprising: a laser oscillator for generating an optical signal; a modulator for modulating the optical signal with data information, wherein the modulator is connected to the laser oscillator downstream from the laser oscillator; a preamplifier connected in series to the modulator downstream from the modulator, wherein the preamplifier amplifies the optical power of the optical signal; a power divider unit connected in series to the preamplifier downstream from the preamplifier; and a parallel circuit connected to the power divider unit downstream from the power divider unit, wherein the parallel circuit includes at least two branches, each branch including a phase shifter and a main amplifier connected in series, wherein each main amplifier performs power amplification of the optical signal, and wherein the main amplifiers are connected, via a plurality of optical waveguides corresponding to the number of branches in the parallel circuit, to a corresponding number of collimators.