Title :
Optical coupling analysis of dual-waveguide structure for monolithic integration of photonic devices
Author :
Kang, Young-Shik ; Kim, Sung-Bock ; Chung, Yong-Duck ; Kim, Jeha
Author_Institution :
Basic Res. Lab., ETRI, Daejeon, South Korea
Abstract :
We proposed the dual-waveguide structure (DWS) with spot size converters and demonstrated the monolithic integration of both photodetector (PD) and electroabsorption modulator (EAM) based on the DWS. The coupling loss between the device facet and a lensed fiber was as small as 2.13 dB. The responsivity of PD and the extinction ratio of EAM were 0.58 A/W and 20 dB at -4 Vdc, respectively. From the optical coupling analysis, it was proved that the dual-waveguide scheme provided one of the best solutions for the monolithic integration of optoelectronic devices.
Keywords :
electro-optical modulation; electroabsorption; integrated optics; integrated optoelectronics; lenses; monolithic integrated circuits; optical fibre couplers; optical fibre losses; optical waveguides; photodetectors; 2.13 dB; coupling loss; device facet; dual-waveguide structure; electroabsorption modulator; extinction ratio; lensed fiber; monolithic integration; optical coupling analysis; optoelectronic devices; photodetector; photonic devices; responsivity; spot size converters; Monolithic integrated circuits; Optical coupling; Optical devices; Optical fiber devices; Optical fiber losses; Optical losses; Optical modulation; Optical waveguides; Photodetectors; Propagation losses; Dual-waveguide structure (DWS); electroabsorption modulator (EAM); monolithic integration; spot size converter (SSC); waveguide photodiode;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.858053
