Tunable laser source with monolithically integrated...

Coherent light generators – Particular active media – Semiconductor

Reexamination Certificate

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C372S050100, C372S050110, C372S020000

Reexamination Certificate

active

07633988

ABSTRACT:
A monolithically-integrated semiconductor optical transmitter that can index tune to any transmission wavelength in a given range, wherein the range is larger than that achievable by the maximum refractive index tuning allowed by the semiconductor material itself (i.e. Δλ/λ>Δn
). In practice, this tuning range is >15 nm. The transmitter includes a Mach-Zehnder (MZ) modulator monolithically integrated with a widely tunable laser and a semiconductor optical amplifier (SOA). By using an interferometric modulation, the transmitter can dynamically control the chirp in the resulting modulated signal over the wide tuning range of the laser.

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