Optical isolator for semiconductor lasers
Applied Optics, Vol. 19, Issue 2, pp. 319-323 (1980)
http://dx.doi.org/10.1364/AO.19.000319
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Abstract
An optical isolator for semiconductor lasers, consisting of a polarizer and a quarterwave plate, was investigated experimentally. It was assembled in a compact laser-to-fiber coupling module. Experiment showed forward loss of 1.15 dB, backward loss of 24.8 dB, and rotative tolerance of 2.4 deg for 1 dB down. The length of the module is 43.2 mm. The coupling efficiency to a graded-index multimode fiber is 37.5%. The extinction ratio is improved by 6.75 dB. The suppression effect on the influence of reflected light was investigated, using the assembled module.
© 1980 Optical Society of America
Citation
H. Kuwahara, "Optical isolator for semiconductor lasers," Appl. Opt. 19, 319-323 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-2-319
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