US 2009/0268765 A1 · Intra-Cavity Phase Modulated Laser Based on Intra-Cavity Depletion-Edge-Translation Lightwave Modulators

Abstract

Use of depletion edge translation as an in cavity phase modulation mechanism in lasers. Aspects of the invention are especially relevant (without limitation) in transmitters for extended reach comprising an intra cavity phase and amplitude modulated laser for generation of a frequency modulated signal and a passive optical spectrum reshaper element, sometimes referred to as a chirp modulated laser. Such techniques may be carried out as disclose herein by adopting predetermined doping profiles and applying predetermined voltage to the laser cavity, and more preferably to a phase section in or adjoining the laser cavity.

Claims29

Dependent claims

A fiber optic communication transmitter comprising:

(a) an optical signal source comprising a laser cavity and adapted to receive a base signal and generate a first signal, wherein the first signal is frequency modulated;
and
(b) an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated;
(c) wherein the first signal is modulated in the laser cavity using the depletion edge translation effect.

1 more element

Dependencies are inferred from the claim text.

Intra-Cavity Phase Modulated Laser Based on Intra-Cavity Depletion-Edge-Translation Lightwave Modulators

Life of this patent

Intra-Cavity Phase Modulated Laser Based on Intra-Cavity Depletion-Edge-Translation Lightwave Modulators

Life of this patent

Abstract

Claims29