High power and widely tunable Si hybrid external-cavity laser for power efficient Si photonics WDM links.
A highly efficient silicon (Si) hybrid external cavity laser with a wavelength tunable ring reflector is fabricated on a complementary metal-oxide semiconductor (CMOS)-compatible Si-on-insulator (SOI) platform and experimental results with high output power are demonstrated. A III-V semiconductor gain chip is edge-coupled into a SOI cavity chip through a SiN(x) spot size converter and Si grating couplers are incorporated to enable wafer-scale characterization. The laser output power reaches 20 mW and the highest wall-plug efficiency of 7.8% is measured at 17.3 mW in un-cooled condition. The laser wavelength tuning ranges are 8 nm for the single ring reflector cavity and 35 nm for the vernier ring reflector cavity, respectively. The Si hybrid laser is a promising light source for energy-efficient Si CMOS photonic links.
Jin Hyoung
JH
Lee
Ivan
I
Shubin
Jin
J
Yao
Justin
J
Bickford
Ying
Y
Luo
Shiyun
S
Lin
Stevan S
SS
Djordjevic
Hiren D
HD
Thacker
John E
JE
Cunningham
Kannan
K
Raj
Xuezhe
X
Zheng
Ashok V
AV
Krishnamoorthy