DocumentCode :
1538839
Title :
Optoelectronic mixing, modulation, and injection locking in millimeter-wave self-oscillating InP/InGaAs heterojunction bipolar photo transistors-single and dual transistor configurations
Author :
Lasri, Jacob ; Bilenca, Alberto ; Eisenstein, Gadi ; Ritter, Dan
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Volume :
49
Issue :
10
fYear :
2001
fDate :
10/1/2001 12:00:00 AM
Firstpage :
1934
Lastpage :
1939
Abstract :
We describe an experimental investigation of two millimeter-wave oscillators one employing a single and the other using two InGaAs/InP heterojunction bipolar photo-transistors (photo-HBTs). The single HBT oscillator can be optically injection locked to improve its spectral purity. Alternatively, it can be modulated by analog or digital data carried by an optical signal. In the two phototransistors case, one HBT oscillates and is optically injection locked while the second serves as a modulator. The two-transistor case proved to be superior in terms of carrier spectral purity, analog modulation efficiency and linearity as well as for digital modulation. Its advantages stem from the better isolation between the local oscillator and modulating signals and from the ability to separate the injection-locking and modulation functions
Keywords :
III-V semiconductors; gallium arsenide; heterojunction bipolar transistors; indium compounds; injection locked oscillators; microwave photonics; millimetre wave generation; millimetre wave oscillators; optical modulation; phase noise; phototransistors; InP-InGaAs; InP/InGaAs; analog modulation efficienc; carrier spectral purity; digital modulation; dual transistor configurations; injection locking; linearity; millimeter-wave oscillators; millimeter-wave self-oscillating heterojunction bipolar phototransistor; optoelectronic mixing; photo-HBTs; spectral purity; Digital modulation; Heterojunction bipolar transistors; Indium gallium arsenide; Indium phosphide; Injection-locked oscillators; Linearity; Local oscillators; Optical mixing; Optical modulation; Phototransistors;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/22.954810
Filename :
954810
Link To Document :
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