Photonic Integrated Fully Tunable Comb Generator Cascading Optical Modulators

Nicola Andriolli, Tommaso Cassese, Marco Chiesa, Cristina de Dios, Giampiero Contestabile

Research output: Contribution to journalArticlepeer-review

Abstract

We report the first monolithic InP photonic integrated comb generator made by cascading optical modulators. The device is extremely compact and tunable both in repetition frequency and wavelength, making real-world applications possible. A distributed Bragg reflector laser, a Mach–Zehnder intensity modulator, and two phase modulators are monolithically integrated on a 4.5 × 2.5 mm^2 chip that also includes a booster semiconductor optical amplifier at the output. Modulators integrated on the circuit have a 3 dB bandwidth of 7 GHz and can generate up to 28 comb lines within a 5 dB power range when properly electrically driven (here demonstrated in the range 4–5 GHz). Operation up to 10 GHz is also reported.
Original languageEnglish
JournalJournal of Lightwave Technology
DOIs
Publication statusPublished - Dec 2018
Externally publishedYes

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