High power wavelength tunable external cavity laser for optical transmission
We report a novel hybrid integrated photonic wavelength-tunable laser for transmitter applications. The device combines two photonic integrated circuit (PIC) technologies, Indium Phosphide (InP) and TriPleX<sup>®</sup> silicon nitride (Si<sub>3</sub>N<sub>4</sub>), to realize a high-power laser. The laser comprises one semiconductor optical amplifier (SOA), integrated on InP, coupling into a Si<sub>3</sub>N<sub>4</sub> external cavity. The cavity includes a Vernier filter of two micro-ring resonators (MRRs) for highly precise wavelength selection. By tuning the MRRs, an ultra-narrow wavelength band is selected from the C-band for single-mode lasing. The laser provides over 21mW output power, with a linewidth 126Hz, over 60dB side-mode suppression ratio (SMSR), and relative intensity noise (RIN) ≤−170dB/Hz. The MRRs are tuned via stress-optic actuation using lead zirconate titanate (PZT) films, which use <1μW per tuning element in quasi-static operation, resulting on a total of 0.5W for the device.
Authors
- M. Zafar
- Charoula Mitsolidou (ORCID: https://orcid.org/0000-0003-2237-9157)
- Christos Tsokos (ORCID: https://orcid.org/0000-0003-0885-3334)
- Ilka Visscher (ORCID: https://orcid.org/0000-0002-0606-828X)
- Raimond Frentrop (ORCID: https://orcid.org/0000-0003-1554-6375)
- Nikolaos K. Lyras (ORCID: https://orcid.org/0000-0002-6964-8185)
- Arjan Meijerink
- Chris Roeloffzen (ORCID: https://orcid.org/0000-0002-1324-2186)
- H. Avramopoulos (ORCID: https://orcid.org/0000-0001-8793-2262)
- Roel Botter (ORCID: https://orcid.org/0000-0003-4943-8196)
- Maria Massaouti (ORCID: https://orcid.org/0000-0002-4715-3608)
- Efstathios Andrianopoulos (ORCID: https://orcid.org/0000-0003-2544-8429)
- Eva Loukisa
- Georgios Megas
- Paul van Dijk (ORCID: https://orcid.org/0000-0002-2553-6712)
Institutions
- National Technical University of Athens (GR)
- LioniX (Netherlands) (NL)
Publication Details
- Published
- 2025-03-20
- DOI
- https://doi.org/10.1117/12.3041200
- Citations
- 1
- Primary Topic
- Semiconductor Lasers and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.73