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

Domenico D. Agostino, Daan Lenstra, Huub Ambrosius, Meint Smit

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
235 Downloads (Pure)


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 coe cients of the coupling element are analytically derived from a 3x3 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.

Original languageEnglish
Pages (from-to)14159-14173
Number of pages15
JournalOptics Express
Issue number11
Publication statusPublished - 28 May 2018


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