Widely tunable multimode-interference based coupled cavity laser with integrated interferometer | Zendy

D. D’Agostino | Zendy; D. Lenstra | Zendy; H.P.M.M. Ambrosius | Zendy; M.K. Smit | Zendy

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Widely tunable multimode-interference based coupled cavity laser with integrated interferometer

Author(s) -

D. D’Agostino,

D. Lenstra,

H.P.M.M. Ambrosius,

M.K. Smit

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.014159

Subject(s) - interferometry , optics , michelson interferometer , fabry–pérot interferometer , materials science , lasing threshold , coupling (piping) , free spectral range , interference (communication) , laser , astronomical interferometer , multi mode optical fiber , optoelectronics , optical fiber , physics , telecommunications , channel (broadcasting) , metallurgy , computer science

We present a simple to process tunable laser, fabricated in a low-cost generic fabrication process and based on two coupled Fabry-Perot cavities. The complex coupling coefficients of the coupling element are analytically derived from a 3×3 MMI using coupled mode theory and chosen to maximize the SMSR during lasing operation. Additionally, one of the cavities contains a reflective interferometer, which acts as coarse wavelength selector. This interferometer is derived from a Michelson Interferometer, by replacing the two independent mirrors with our optimized coupling element, leading to a doubled Free Spectral Range. As a result, we obtained a tuning range of 26 nm with potential for beyond 40 nm, a SMSR larger than 40 dB and fiber coupled power up to 9 dBm.

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