Title :
Velocity-matched distributed photodetectors and balanced photodetectors with p-i-n photodiodes
Author :
Islam, M. Saif ; Murthy, Sanjeev ; Itoh, Tatsuo ; Wu, Ming C. ; Novak, Dalma ; Waterhouse, Rodney B. ; Sivco, Deborah L. ; Cho, Alfred Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
10/1/2001 12:00:00 AM
Abstract :
We report on the first demonstration of velocity-matched distributed photodetectors and balanced photodetectors with p-i-n photodetectors. Record-high linear dc photocurrent of 45 mA has been achieved without suffering from thermal damage, thanks to the superior power handling capability of p-i-n photodiodes. A novel fiber alignment technique has been developed to achieve high linear photocurrent. More than 37 dB of common-mode-rejection ratio and 45-dB suppression of laser relative intensity noise over a broad frequency range have been achieved using the distributed balanced photodetectors in an RF fiber-optic link. The frequency response is flat from 1 to 35 GHz
Keywords :
frequency response; microwave photonics; optical fibre communication; optical receivers; p-i-n photodiodes; photodetectors; 1 to 35 GHz; 45 mA; RF fiber-optic link; balanced photodetectors; common-mode-rejection ratio; fiber alignment technique; frequency response; laser relative intensity noise; linear dc photocurrent; p-i-n photodiodes; power handling capability; velocity-matched distributed photodetectors; Erbium-doped fiber lasers; Laser noise; Masers; Microwave photonics; Optical noise; Optical receivers; PIN photodiodes; Photoconductivity; Photodetectors; Radio frequency;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
