title: Demonstration of 12.2% wall plug efficiency in uncooled single mode external-cavity tunable Si/III-V hybrid laser.
abstract: 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.
authors.forename: Jin-Hyoung
authors.initials: JH
authors.lastname: Lee
authors.forename: Jock
authors.initials: J
authors.lastname: Bovington
authors.forename: Ivan
authors.initials: I
authors.lastname: Shubin
authors.forename: Ying
authors.initials: Y
authors.lastname: Luo
authors.forename: Jin
authors.initials: J
authors.lastname: Yao
authors.forename: Shiyun
authors.initials: S
authors.lastname: Lin
authors.forename: John E
authors.initials: JE
authors.lastname: Cunningham
authors.forename: Kannan
authors.initials: K
authors.lastname: Raj
authors.forename: Ashok V
authors.initials: AV
authors.lastname: Krishnamoorthy
authors.forename: Xuezhe
authors.initials: X
authors.lastname: Zheng