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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Tachikawa; Yoshihiko
Address:
Tokyo, JP
No. of patents:
3
Patents:












Patent Number Title Of Patent Date Issued
6008487 Optical-fiber inspection device December 28, 1999
In the primary invention of this application, an optical-fiber inspection device which detects the distance to a reflection point within the DUT and the amount of reflected light by dividing into two a laser beam which is possible to be frequency-swept, making one of the divided light be
5933235 Optical spectrum analyzer and spectrometer August 3, 1999
A first invention of the present application is an optical spectrum analyzer comprising a spectrometer apparatus an arithmetic unit for calculating the center wavelength from output signals from photo detector devices of a device array included in the spectrometer apparatus and from
5844235 Optical frequency domain reflectometer for use as an optical fiber testing device December 1, 1998
In the primary invention of this application, an optical-fiber inspection device which detects the distance to a reflection point within the DUT and the amount of reflected light by dividing into two a laser beam which is possible to be frequency-swept, making one of the divided light be










 
 
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