Open AccessDemonstration of 122% wall plug efficiency in uncooled single mode external-cavity tunable Si/III-V hybrid laser
Author(s) -
Jinhyoung Lee,
Jock Bovington,
Ivan Shubin,
Ying Luo,
Jin Yao,
Shiwei Lin,
J. E. Cunningham,
Kannan Raj,
Ashok V. Krishnamoorthy,
Xuezhe Zheng
Publication year - 2015
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.23.012079
Subject(s) - materials science , laser , laser linewidth , optics , optoelectronics , photonics , injection seeder , distributed feedback laser , silicon on insulator , photonic integrated circuit , tunable laser , laser power scaling , silicon , wavelength , physics
A Si/III-V hybrid laser has been a highly sought after device for energy-efficient and cost-effective high-speed silicon photonics communication. We present a high wall-plug efficiency external-cavity hybrid laser created by integrating an independently optimized SOI ring reflector and a III-V gain chip. In our demonstration, the uncooled integrated laser achieved a waveguide-coupled wall-plug efficiency of 12.2% at room temperature with an optical output power of ~10 mW. The laser operated single-mode near 1550 nm with a linewidth of 0.22 pm. This is a tunable light source with 8 nm wavelength tuning range. A proof-of-concept laser wavelength stabilization technique has also been demonstrated. Using a simple feedback loop, we achieved mode-hop-free operation in a packaged external-cavity hybrid laser as bias current was varied by 60mA.