Title :
Optical power stabilization using a germanium photodiode and a variable optical attenuator integrated on a silicon wire waveguide platform
Author :
Yamada, K. ; Tsuchizawa, T. ; Watanabe, T. ; Shinojima, H. ; Nishi, H. ; Kou, R. ; Park, S. ; Ishikawa, Y. ; Wada, K. ; Itabashi, S.
Author_Institution :
NTT Microsyst. Integration Labs., NTT Corp., Atsugi, Japan
Abstract :
We have demonstrated fast optical power stabilization using a germanium photodiode and a silicon variable optical attenuator monolithically integrated on a compact silicon photonic platform. These integrated devices work synchronously with a ~100-MHz bandwidth. With an external electronic feedback circuit, the output power of the device is stabilized within an error of 3.7 dB for 20-dB input power variation. Feedback response time is about 100 ns.
Keywords :
elemental semiconductors; germanium; integrated optics; optical attenuators; optical waveguides; photodiodes; silicon; Ge-Si; Si; compact silicon photonic platform; electronic feedback circuit; feedback response time; germanium photodiode; integrated devices; monolithic integration; optical power stabilization; silicon wire waveguide platform; variable optical attenuator; Adaptive optics; Optical attenuators; Optical feedback; Optical fibers; Optical pulses; Passive optical networks;
Conference_Titel :
Group IV Photonics (GFP), 2010 7th IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6344-2
DOI :
10.1109/GROUP4.2010.5643327
