Affiliation:
1. Ori-chip optoelectronics technology LTD
2. Zhejiang University
3. School of Physics & CRANN and CONNECT
Abstract
We present an 8-µm-wide 800-µm-long high-power, single-mode and low RIN DFB laser using a dual-waveguide structure. The introduced passive lower waveguide has weakenes the lateral optical confinement for the ridge waveguide, and thus reduces losses caused by the p-doped layers and maintains single mode stability of the laser. The fabricated laser exhibited an output power higher than 170 mW and a relative intensity noise (RIN) below −157 dB/Hz along with a side-mode suppression-ratio (SMSR) over 55 dB. The temperature tuning from −10°C to 60°C allows an 8.6 nm wavelength tunability with a variation coefficient of 0.12 nm/K. The relaxation oscillation frequency is around 8 GHz, and the linewidth is about 250 kHz at 100 mW output power for the fabricated laser. The characteristics of the proposed high-power laser, including high slope efficiency, single mode stability and low noise, make it a suitable candidate for optical communication.
Funder
Opened Fund of the State Key Laboratory of Integrated Optoelectronics
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
Atomic and Molecular Physics, and Optics
Cited by
7 articles.
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1. Low-Threshold 795 nm Oxide-Confined Distributed Feedback Lasers With Surface Gratings;IEEE Photonics Journal;2023-12
2. Design and optimization of distributed feedback lasers with low relative intensity noise;Semiconductor Lasers and Applications XIII;2023-11-27
3. Gain-Coupled Wide-Ridge-Waveguide High-Power 1.55µm Single-Mode DFB Laser;2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM);2023-11-04
4. Design of 1550 nm High-power Single-mode DBR Laser Diodes;2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM);2023-11-04
5. A High-Power Fundamental-Mode Lateral Microstructure Laser;IEEE Photonics Technology Letters;2023-08-15