Abstract
InP membrane directly modulated semiconductor lasers (DMLs) with photon-photon resonance (PPR) have a lot of potential to be used in short-range telecommunication systems due to their small footprint, high energy efficiency, and high modulation bandwidth. However, the stability of the S21 response in PPR-based devices is sensitive to precise phase-matching between the lasing mode and PPR mode. We designed, fabricated, measured, and analyzed a C-band DML with active phase-tuning achieved by a thermal phase shifter on top of a long passive waveguide. The phase shifter enables tuning of the PPR frequency in the range of 5 GHz resulting in the PPR peak power enhancement of 16 dB. We study the small-signal responses at different combinations of bias current and phase shifter current and show, that in some cases the phase shifter enables a bandwidth that cannot be achieved by sweeping the bias current. The laser dynamic behavior is simulated and the influence of the most important design and processing parameters on bandwidth is studied in detail.
| Original language | English |
|---|---|
| Article number | 10706920 |
| Number of pages | 12 |
| Journal | IEEE Journal of Quantum Electronics |
| Volume | 60 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Dec 2024 |
Funding
This work was supported in part by Huawei Research Grant High speed Directly Modulated lasers on InP membrane on Si platform (HDMI) and in part by the H2020 Information and Communication Technology (ICT) TWILIGHT Project under the Photonics Public Private Partnership (PPP) under Contract 781471. This work was supported by Huawei Research grant HDMI and H2020 ICT TWILIGHT Project (contract No. 781471) under the Photonics PPP. Corresponding author: A. Zozulia
Keywords
- DFB
- InP membrane
- directly modulated lasers
- photon-photon resonance
