Patent ID: 7634195

Claim:
An optical transport network comprising: an optical transmitter module comprising: a first Group III-V semiconductor chip, an array of modulated sources provided on the first Group III-V semiconductor chip, each of the modulated sources providing a corresponding one of a plurality of optical channels; an optical multiplexer provided on the first Group III-V semiconductor chip and coupled to the modulated sources for providing a multiplexed signal including the plurality of optical channels, and a waveguide provided on the first Group IIIV semiconductor chip and coupled to the optical multiplexer, the waveguide being configured to receive the multiplexed signal from the optical multiplexer and output the multiplexed signal; and an optical receiver module comprising: a second Group III-V semiconductor chip, an optical demultiplexer provided on the second Group III-V semiconductor chip, for demultiplexing the multiplexed signal, and a plurality of optical detection elements provided on the second Group III-V semiconductor chip and coupled to the optical demultiplexer, each of the plurality of optical detection elements configured to receive a corresponding one of the plurality of optical channels output from the optical demultiplexer, the optical detection elements being configured to output a plurality of electrical signals in response to the plurality of optical channels.