Patent ID: 8472487

Claim:
A photonic integrated circuit, comprising: a substrate; a plurality of lasers provided on the substrate, each of the plurality of lasers outputting a corresponding one of a plurality of optical signals, each of the plurality of optical signals having a corresponding one of a plurality of wavelengths; and a plurality of Mach-Zehnder (MZ) modulators provided on the substrate, each of the plurality of MZ modulators having a corresponding one of a plurality of modulator arms, each of the plurality of optical signals being supplied to a corresponding one of the plurality of MZ modulators over a corresponding one of a plurality of paths, each of the plurality of paths being spaced from one another, each of the plurality of MZ modulators being configured to supply a corresponding one of a plurality of modulated optical signals, light associated with each of the plurality of optical signals being transmitted through a corresponding one of the plurality of modulator arms in a propagation direction, each of the plurality of modulator arms having a corresponding one of a plurality of lengths along the propagation direction, each of the plurality of lengths being different from one another.