Patent ID: 7577369

Claim:
A system, comprising: a laser for generating a single polarized light of wavelength λ to an output; a modulator having an input and an output, the input of the modulator coupled to the output of the laser for receiving the single polarized light through a first planar waveguide portion between the laser and the modulator, the modulator superimposing information bandwidth Δλ upon the single polarized light thereby producing at the output of the modulator a resulting optical signal having a range of wavelengths λ+/−Δλ; and a dispersion compensating module having an input and an output, the input of the dispersion compensating module coupled to the output of the modulator for receiving the resulting optical signal through a second planar waveguide portion between the modulator and the dispersion compensating module, the dispersion compensator module generating a single polarized output light signal, wherein the laser, the first planar waveguide portion, the modulator, the second planar waveguide portion and the dispersion compensating module are integrated on a chip, wherein the single polarized output light signal has a polarization condition that is substantially the same as the single polarized light generated by the laser.