InP Photonic Integrated Comb Generator made by a cascade of Optical Modulators

Cassese, Tommaso; Andriolli, N.; Chiesa, Marco; Criado, Á. R.; Contestabile, G.

doi:10.1364/ofc.2018.th1i.6

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2018

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“…A preliminary characterization of a similar integrated circuit has been recently reported [13]. In respect of that report, here we show a modified circuit, which also includes an input waveguide to inject light from an external laser source (as an alternative to the on-chip laser), and demonstrate that a larger number of comb lines is attainable by using larger voltage swings to drive the integrated optical phase modulators.…”

Section: Introductionmentioning

confidence: 61%

Photonic Integrated Fully Tunable Comb Generator Cascading Optical Modulators

Andriolli

Cassese

Chiesa

et al. 2018

J. Lightwave Technol.

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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.

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Section: Introductionmentioning

confidence: 61%