Optical power system for digital-to-analog link

摘要

An optical power supply includes a plurality of lasers each providing an output at a respective optical wavelength and optical power and a plurality of optical splitter groups, each comprising an input associated with a respective one of the plurality of lasers and splitting the input into a plurality of outputs each having an output power approximated by;Powern=1xn⁢Powerinput,
where: x is an integer greater than 1; n is a number of the outputs of the optical splitter group and n=1 . . . m; m is a total number of outputs of the optical splitter group; Powern is the output power of the nth output; and Powerinput is the optical power of the output of the laser received at the input of the optical splitter group.

主权项

1. An optical power supply comprising:
a plurality of lasers each providing an output at a respective optical wavelength and optical power; a plurality of optical splitter groups, each comprising an input associated with a respective one of the plurality of lasers and splitting the input into a plurality of outputs each having an output power approximated by:Powern=1xn⁢Powerinput, where:
x is an integer greater than 1;n is a number of the outputs of the optical splitter group and n=1 . . . m;m is a total number of outputs of the optical splitter group;Powern is the output power of the nth output; andPowerinput is the optical power of the output of the laser received at the input of the optical splitter group; and a plurality of optical modulator groups each comprising a plurality of modulator inputs and associated modulator outputs, each of the plurality of modulator inputs of a respective optical modulator group connected to a respective output from different optical splitting groups such that, for each modulator group, data bit datai modulates an optical input having a (w−i)th highest optical power of the optical modulator group where:
datai is the ith bit in the data signal and i=0 . . . w −1, where data w−1 is the most significant bit; andw is the number of bits in the data signal.