Share Email Print
cover

Proceedings Paper

Low polarization dependent loss of InP-based waveguide photodetector integrated with spot-size converter for 100Gb/s coherent receiver
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We demonstrated the waveguide photodetector (WG PD) integrated with spot-size converter (SSC) for coherent receiver of 100Gb/s operation. The WG PD integrated with SSC was designed as diluted WG, dual lateral taper structure, and PIN-photodiode. The epitaxial layers of InxGa1-xAsyP1-y/InP, InxGa1-xAsyP1-y, and InGaAs were adopted as the diluted WG, dual tapers, and absorber of PD, respectively. The shape and thickness of each structure were determined through the simulation of 3D finite-difference beam propagation method. Although the evanescent coupling was highly sensitive, we optimized the structures with simulated responsivity and polarization dependent loss (PDL) as 0.70 A/W and 0.1 dB, respectively. We successfully obtained the SSC-integrated WG PD through numerous fabrication process including photolithography. The electrical and optical properties were characterized with laser launching. Fabricated PDs had almost similar responsivity and PDL with the simulation results. The responsivity and PDL were measured as 0.7 A/W and less than 0.3 dB respectively. The 3 dB-bandwidth was measured as 34 GHz. We successfully realized low PDL and high responsivity by adopting the lateral taper structure for SSC-integrated WG PD.

Paper Details

Date Published: 24 February 2016
PDF: 6 pages
Proc. SPIE 9744, Optical Components and Materials XIII, 974416 (24 February 2016); doi: 10.1117/12.2209452
Show Author Affiliations
Young-Ho Ko, Electronics and Telecommunications Research Institute (Korea, Republic of)
Joong-Seon Choe, Electronics and Telecommunications Research Institute (Korea, Republic of)
Won-Seok Han, Electronics and Telecommunications Research Institute (Korea, Republic of)
Jong-Hoi Kim, Electronics and Telecommunications Research Institute (Korea, Republic of)
Yong-Hwan Kwon, Electronics and Telecommunications Research Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 9744:
Optical Components and Materials XIII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

© SPIE. Terms of Use
Back to Top