Title :
Distributed balanced photodetectors for high-performance RF photonic links
Author :
Islam, M. Saiful ; Tai Chan ; Nespola, Antonino ; Mathai, Sagi ; Rollinger, Andrew R. ; Deal, William R. ; Itoh, Tatsuo ; Wu, Ming C. ; Sivco, Deborah L. ; Cho, Alfred Y.
Author_Institution :
Dept. of Electr. Eng., California State Univ., Los Angeles, CA, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
A novel velocity-matched distributed balanced photodetector with a 50-/spl Omega/ coplanar waveguide output transmission line has been experimentally demonstrated in the InP-InGaAs material system. Distributed absorption and velocity matching are employed to achieve high-saturation photocurrent. A common mode rejection ratio of 27 dB has been achieved. The RF link experiment conducted at 6.48 GHz shows that the laser intensity noise has been suppressed by more than 17 dB.
Keywords :
III-V semiconductors; coplanar waveguides; gallium arsenide; indium compounds; optical planar waveguides; optical receivers; photodetectors; 50 ohm; 6.48 GHz; InP-InGaAs; InP-InGaAs material system; RF link experiment; common mode rejection ratio; coplanar waveguide output transmission line; distributed absorption; distributed balanced photodetectors; high-performance RF photonic links; high-saturation photocurrent; laser intensity noise; velocity matching; velocity-matched distributed balanced photodetector; Absorption; Conducting materials; Coplanar transmission lines; Coplanar waveguides; Laser modes; Laser noise; Optical materials; Photoconductivity; Photodetectors; Radio frequency;
Journal_Title :
Photonics Technology Letters, IEEE
