Results 21 to 30 of about 395 (125)

EVALUATION METHOD FOR PARASITIC EFFECTS OF THE ELECTRO-OPTICAL MODULATOR IN A FIBER OPTIC GYROSCOPE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.The paper proposes an original method for studying the parasitic effects in the electro-optic modulator of the fiber optic gyroscope. Proposed method is based on the usage of a special waveform phase modulation signal. Method.
S. A. Volkovskiy   +4 more
doaj   +1 more source

SCALE FACTOR DETERMINATION METHOD OF ELECTRO-OPTICAL MODULATOR IN FIBER-OPTIC GYROSCOPE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research. We propose a method for dynamic measurement of half-wave voltage of electro-optic modulator as part of a fiber optic gyroscope. Excluding the impact of the angular acceleration o​n measurement of the electro-optical coefficient is ...
A. S. Aleynik   +4 more
doaj   +1 more source

Integrated microwave acousto-optic frequency shifter on thin-film lithium niobate [PDF]

open access: yes, 2020
Electrically driven acousto-optic devices that provide beam deflection and optical frequency shifting have broad applications from pulse synthesis to heterodyne detection.
Crowe, Devon   +7 more
core   +2 more sources

A 7-8 GHz Serrodyne Modulator in SiGe for MIMO Signal Generation [PDF]

open access: yes2014 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS), 2014
An 8-bit 360o sawtooth modulated phase shifter is used to apply very small frequency offsets to RF signals between 7 and 8 GHz. Offsets between 6 Hz and 10MHz can be obtained. Such frequency offsets can be used to generate orthogonal signals, which are required in e.g. MIMO applications. Each undesired frequency component is suppressed to below -30 dBc.
Withagen, J.C.J.G.   +3 more
openaire   +2 more sources

Time‐varying optical vortices enabled by time‐modulated metasurfaces

open access: yesNanophotonics, Volume 9, Issue 9, Page 2957-2976, February 2020., 2020
Abstract In this paper, generation of optical vortices with time‐varying orbital angular momentum (OAM) and topological charge is theoretically demonstrated based on time‐modulated metasurfaces with a linearly azimuthal frequency gradient. The topological charge of such dynamic structured light beams is shown to continuously and periodically change ...
Hooman Barati Sedeh   +2 more
wiley   +1 more source

Realization of fiber-based laser Doppler vibrometer with serrodyne frequency shifting [PDF]

open access: yes, 2011
We demonstrate a laser Doppler vibrometer (LDV) based on the serrodyne frequency shifting technique. A proof-of-principle system is implemented on the basis of fiber-optic components but opens the way toward an ultracompact integrated LDV system on a ...
Baets, Roel, Li, Yanlu, Meersman, Stijn
core   +2 more sources

Efficient large-scale multiplexing of fiber Bragg grating and fiber Fabry-Perot sensors for structural health monitoring applications [PDF]

open access: yes, 2006
Fiber Bragg gratings have been demonstrated as a versatile sensor for structural health monitoring. We present an efficient and cost effective multiplexing method for fiber Bragg grating and fiber Fabry-Perot sensors based on a broadband mode-locked ...
Cranch, Geoffrey A.   +2 more
core   +1 more source

Baseband Radio over Fiber Aided Millimeter-Wave Distributed Antenna for Optical/Wireless Integration [PDF]

open access: yes, 2013
A Baseband Radio Over Fiber (BROF) architecture is proposed, where upto four Radio Frequency (RF) carriers can be generated, while using the heterodyne photo-detection of only two optical signals. This proposed BROF architecture has a star-like structure
El-Hajjar, Mohammed   +3 more
core   +1 more source

Frequency stabilization of DBR fiber grating laser using interferometric technique [PDF]

open access: yes, 2014
Author name used in this publication: W. H. ChungAuthor name used in this publication: H. Y. TamAuthor name used in this publication: M. S. DemokanAuthor name used in this publication: P. K. A. WaiAuthor name used in this publication: C.
Chung, W   +4 more
core   +1 more source

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