Title :
Chirping characteristic and frequency response of MQW optical intensity modulator
Author :
Mitomi, Osamu ; Nojima, Shunji ; Kotaka, Isamu ; Wakita, Koichi ; Kawano, Kenji ; Naganuma, Mitsuru
Author_Institution :
NTT Corp., Kanagawa, Japan
fDate :
1/1/1992 12:00:00 AM
Abstract :
The spectral linewidth enhancement factor and frequency responses of electro-absorption-type optical-intensity modulators, especially InGaAs/InAlAs MQW modulators, are described. A method of exactly estimating the value of the α factor is presented under the nonlinearity of extinction-ratio characteristics. For measuring the frequency response of modulators, the sideband strength of the modulated output light with an optical spectrum analyzer, is analytically compared with the microwave power of photodiode direct detection with an electrical spectrum analyzer
Keywords :
III-V semiconductors; aluminium compounds; electro-optical devices; electroabsorption; frequency response; gallium arsenide; indium compounds; optical communication equipment; optical modulation; spectral line breadth; α factor; InGaAs-InAlAs; MQW optical intensity modulator; electrical spectrum analyzer; electro-absorption-type; extinction-ratio characteristics; frequency response; microwave power; modulated output light; optical spectrum analyzer; photodiode direct detection; semiconductors; sideband strength; spectral analysis; spectral linewidth enhancement factor; Chirp modulation; Frequency measurement; Frequency response; Indium compounds; Indium gallium arsenide; Microwave measurements; Optical modulation; Power measurement; Quantum well devices; Spectral analysis;
Journal_Title :
Lightwave Technology, Journal of
