Title :
A polarization-independent refracting-facet uni-traveling-carrier photodiode with high efficiency and large bandwidth
Author :
Muramoto, Yoshifumi ; Fukano, Hideki ; Furuta, Tomofumi
Author_Institution :
NTT Photonics Labs., Kanagawa
Abstract :
A polarization-independent high-efficiency edge-illuminated refracting-facet photodiode (RFPD) with a uni-traveling-carrier (UTC) structure has been developed. The efficiency is maximized by using a ring-shaped electrode, and the polarization dependence is minimized by designing the layers so that the interferences between the lights reflected from the different interfaces compensate each other. The fabricated RF-UTC-PD shows a responsivity as high as 1.0 A/W with a polarization dependence of less than 0.2 dB. A large 3-dB bandwidth of over 50 GHz at a high operation current of 20 mA is also observed
Keywords :
optical fabrication; photodetectors; photodiodes; semiconductor device measurement; 20 mA; refracting-facet photodiode; responsivity; unitraveling-carrier photodiode; Absorption; Anodes; Bandwidth; Electrons; Interference; Optical fiber amplifiers; Optical polarization; Optical refraction; Photodiodes; Reflectivity; Photodetectors; photodiodes (PDs);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.881470
