Title :
Highly sensitive interferometric autocorrelator in the optical communication band using Si avalanche photodiode as two-photon absorber
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
Summary form only given. In this paper, in order to improve the sensitivity of an interferometric autocorrelator, we utilize a Si avalanche photodiode (APD) as the two-photon absorber for the first time to our knowledge. The sensitivity of 2 mW/sup 2/ is obtained with the help of the avalanche gain of the APD>1000. By using the newly developed autocorrelator, we demonstrate the measurement of the pulse width and chirp of optical pulses having low peak power, which are generated from an actively mode-locked external-cavity semiconductor laser at 1.55 /spl mu/m.
Keywords :
avalanche photodiodes; light interferometers; optical communication equipment; optical correlation; silicon; two-photon processes; Si; Si avalanche photodiode; actively mode-locked external-cavity semiconductor laser; interferometric autocorrelator; optical communication; pulse chirp measurement; pulse width measurement; sensitivity; two-photon absorber; Autocorrelation; Avalanche photodiodes; Chirp; Optical interferometry; Optical pulse generation; Optical pulses; Optical sensors; Power measurement; Pulse measurements; Space vector pulse width modulation;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 1998. OFC '98., Technical Digest
Conference_Location :
San Jose, CA, USA
Print_ISBN :
1-55752-521-8
DOI :
10.1109/OFC.1998.657432
