optical heterodyne interferometer
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Optical activity measurement by use of a balanced detector optical heterodyne interferometer

2006 ◽  
Vol 45 (16) ◽  
pp. 3733 ◽  
Author(s):  
Chien Chou ◽  
Hsiu-Ming Tsai ◽  
Kuan-Yung Liao ◽  
Li-Dek Chou ◽  
Po-Hsiong Huang
Keyword(s):  
Optical Activity ◽  
Activity Measurement ◽  
Optical Heterodyne ◽  
Heterodyne Interferometer ◽  
Optical Heterodyne Interferometer

Optical heterodyne interferometer using an LCD grating as a spatial modulator

2005 ◽  
Author(s):  
S. Casillas-de la Torre ◽  
G. Martinez ◽  
G. Garcia-Torales ◽  
C. Solano ◽  
J. L. Flores
Keyword(s):  
Optical Heterodyne ◽  
Heterodyne Interferometer ◽  
Optical Heterodyne Interferometer

INTEGRATED OPTICAL HETERODYNE INTERFEROMETER IN LITHIUM NIOBATE

2001 ◽  
Vol 10 (02) ◽  
pp. 163-168 ◽  
Author(s):  
A. RUBIYANTO ◽  
H. HERRMANN ◽  
R. RICKEN ◽  
F. TIAN ◽  
W. SOHLER
Keyword(s):  
Lithium Niobate ◽  
Integrated Circuit ◽  
High Performance ◽  
Signal To Noise Ratio ◽  
Phase Shifters ◽  
Vibration Measurement ◽  
Optical Heterodyne ◽  
Two Phase ◽  
Heterodyne Interferometer ◽  
Optical Heterodyne Interferometer

A high performance integrated acousto-optical heterodyne interferometer has been developed for vibration measurement. All components including an acousto-optical TE–TM mode converters, two electro-optical TE–TM converters, two polarization splitters and two phase shifters are integrated on a X-cut Lithium Niobate substrate. The fully packaged optical integrated circuit (optical-IC) coupling with three fibers optics pigtails gave a signal-to-noise ratio of 69 dB with at 3 kHz bandwidth by using a commercial DFB laser diode as a light source with 1561 nm emission wavelength and a PIN-FET balanced receiver.

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