DocumentCode :
1098357
Title :
High-speed traveling-wave directional coupler switch/modulator for λ = 1.32 µm
Author :
Alferness, R.C. ; Joyner, C.H. ; Buhl, L.L. ; Korotky, S.K.
Author_Institution :
Bell Labs., Holmdel, NJ, USA
Volume :
19
Issue :
9
fYear :
1983
fDate :
9/1/1983 12:00:00 AM
Firstpage :
1339
Lastpage :
1341
Abstract :
We have designed and fabricated a Ti:LiNbO3 waveguide traveling-wave directional coupler switch/modulator operating at 
m that exhibits a 3 dB modulation bandwidth of 7.2 GHz, a switching voltage of 4.5 V, and power per unit bandwidth of 7.6 mw/ GHz. Using short drive pulses, optical pulsewidths as short as 58 ps have been generated and directly measured with a high-speed InGaAs/InP p-i-n photodiode. Thick ( 
m) electroplated gold has been used to produce a small gap (5 μm) and low-loss coplanar strip electrode. The 1.5 cm long, 15 μm wide electrode has a dc resistance of 7 Ω and a total microwave power loss of ∼4dB at 5 GHz.
m that exhibits a 3 dB modulation bandwidth of 7.2 GHz, a switching voltage of 4.5 V, and power per unit bandwidth of 7.6 mw/ GHz. Using short drive pulses, optical pulsewidths as short as 58 ps have been generated and directly measured with a high-speed InGaAs/InP p-i-n photodiode. Thick ( m) electroplated gold has been used to produce a small gap (5 μm) and low-loss coplanar strip electrode. The 1.5 cm long, 15 μm wide electrode has a dc resistance of 7 Ω and a total microwave power loss of ∼4dB at 5 GHz.Keywords :
Infrared modulation/demodulation; Lithium materials/devices; Optical directional couplers; Optical switches; Time-division multiplexing; Traveling-wave devices; Bandwidth; Directional couplers; Electrodes; High speed optical techniques; Optical modulation; Optical pulse generation; Optical switches; Optical waveguides; Pulse measurements; Voltage;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1983.1072056
Filename :
1072056
Link To Document :
