An acoustooptical directional coupler for an optical time-domain reflectometer
- 1 April 1984
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 2 (2) , 108-115
- https://doi.org/10.1109/jlt.1984.1073589
Abstract
An optical directional coupler in which a TeO2acoustooptical deflector (AOD) is employed has been designed and developed for use in an optical time-domain reflectometer (OTDR). A low round-trip insertion loss of 4.6 dB and low crosstalk of below -48 dB were attained for the fabricated coupler. Signals of large amplitude, such as Fresnel reflection, could be suppressed to less than - 33 dB by switching of the optical directional coupler. Amplitude fluctuation of the back-scattered signal due to polarization fluctuation in single-mode fibers is reduced to a negligible extent.Keywords
This publication has 12 references indexed in Scilit:
- OTDR in single-mode fibre at 1.55 μm using a semiconductor laser and PINFET receiverElectronics Letters, 1982
- Measurement and analysis on polarization properties of backward Rayleigh scattering for single-mode optical fibersIEEE Journal of Quantum Electronics, 1981
- Photon probe fault locator for single-mode optical fiber using an acoustooptical light deflectorIEEE Journal of Quantum Electronics, 1981
- Design considerations for acousto-optic devicesProceedings of the IEEE, 1981
- Backscattering in single-mode fibresElectronics Letters, 1980
- A welded optical fiber signal splitterFiber and Integrated Optics, 1980
- Photon Probe-An Optical-Fiber Time-Domain ReflectometerBell System Technical Journal, 1977
- Acoustooptic deflection materials and techniquesProceedings of the IEEE, 1973
- Acoustooptical pulse modulatorsIEEE Journal of Quantum Electronics, 1970
- A review of acoustooptical deflection and modulation devicesProceedings of the IEEE, 1966