Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1986-05-05
1988-12-13
Willis, Davis L.
Optics: measuring and testing
By particle light scattering
With photocell detection
356346, G01B 902
Patent
active
047906553
ABSTRACT:
A system for measuring laser spectrum is disclosed in which the laser light to be measured is branched into one branched light and the other branched light so that the laser spectrum of the light is measured from a beat output resulting from mixing a delayed light obtained by delaying the one branched light for a certain period of time with the other branched light undelayed. In accordance with the present invention, the delay time of the delayed light undergoes such variations as to assume a value equal to an integral multiple of a fixed delay time by the use of an optical directional coupler.
REFERENCES:
patent: 4530097 (1985-07-01), Stokes et al.
Kikuchi et al., "High Resolution Measurement of the Spectrum of Semiconductor Lasers", Japanese Annual Review, Computers, Telecomm., 1982.
Mochizuki Kiyofumi
Yamamoto Shu
Burns Robert E.
Kokusai Denshin Denwa Kabushiki Kaisha
Koren Matthew W.
Lobato Emmanuel J.
Willis Davis L.
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