DocumentCode :
51849
Title :
A Simultaneous Variable Optical Weight and Delay in a Semiconductor Optical Amplifier for Microwave Photonics
Author :
Chang, Matthew P. ; Wang, Noelle ; Wu, Ben ; Prucnal, Paul R.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Volume :
33
Issue :
10
fYear :
2015
fDate :
May15, 15 2015
Firstpage :
2120
Lastpage :
2126
Abstract :
In this paper, we demonstrate how a single semiconductor optical amplifier can serve as a simultaneous variable optical weight and tunable optical delay for microwave photonics. The device weight, or power transmission, and delay can be controlled simultaneously and independently from each other by varying the input optical power and the semiconductor bias current. The dual functionality is achieved by combining the effects of slow and fast light with cross-gain modulation in the semiconductor. We experimentally demonstrate a tunable delay range of 100 ps and RF gain range of -6 to +3 dB for a 600-MHz microwave signal and show how the weight and delay of the device can be separately tuned. The delay range and bandwidth of the device are limited by the semiconductor carrier lifetime and characteristic of slow and fast light. As a simultaneous optical weight and delay, as well as a wavelength converter, a semiconductor optical amplifier operating in this manner can be a compact and versatile element in microwave photonics, radio-over-fiber, and general analog optical signal processing.
Keywords :
high-speed optical techniques; microwave photonics; optical control; optical delay lines; optical modulation; optical wavelength conversion; semiconductor optical amplifiers; analog optical signal processing; cross-gain modulation; fast light effects; frequency 600 MHz; microwave photonics; optical control; optical wavelength converter; power transmission; radio-over-fiber; semiconductor bias current; semiconductor carrier lifetime; semiconductor optical amplifier; simultaneous variable optical weight; slow light effects; time 100 ps; tunable optical delay; Delays; Fast light; Gain; Optical attenuators; Optical modulation; Optical pumping; Semiconductor optical amplifiers; Cross-gain modulation (XGM); Semiconductor optical amplifier (SOA); cross-gain modulation (XGM); microwave photonics; optical delay line; semiconductor optical amplifier (SOA); slow and fast light;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2015.2400399
Filename :
7031380
Link To Document :
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