Title :
Balanced dual photodiodes integrated with a 3 dB directional coupler for coherent lightwave receivers
Author :
Chandrasekhar, S. ; Campbell, J.C. ; Storz, F.G. ; Dentai, A.G. ; Joyner, C.H. ; Qua, G.J.
Author_Institution :
AT&T Bell Labs, Holmdel, NJ, USA
fDate :
11/10/1988 12:00:00 AM
Abstract :
A photonic integrated circuit consisting of a 3 dB directional coupler and two GaInAs pin photodiodes connected in series at the output of the coupler has been fabricated. The photodiodes have typical dark currents of approximately 3 nA at a reverse bias of 8 V, with more than 1 MΩ isolation. Symmetrical operating characteristics with respect to the launching direction have been achieved
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; integrated optoelectronics; optical communication equipment; optical couplers; p-i-n diodes; photodiodes; receivers; GaInAsP-GaInAs; balanced dual photodiodes; coherent lightwave receivers; dark currents; directional coupler; isolation; launching direction; p-i-n photodiodes; photonic integrated circuit; reverse bias; symmetrical operating characteristics;
Journal_Title :
Electronics Letters
