Variable-wavelength light source apparatus

Details Variable-wavelength light source apparatus Variable-wavelength light source apparatus

2005-05-24

2005-05-24

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

C356S125000, C356S073100, C250S227140, C250S227190, C250S225000

Reexamination Certificate

active

06897948

ABSTRACT:
An optical coupler13, a reflection attenuation amount measurement photodetector14, and an APC photodetector15are provided in a variable-wavelength light source apparatus1and the reflection attenuation amount can be measured simply by connecting a device under test without using any external optical power meter, etc, and when wavelength calibration is executed, an external wavelength calibration gas cell18and a total reflection termination20are connected, whereby the wavelength of an optical signal output from a variable-wavelength light source11can be measured and controlled with higher accuracy.

REFERENCES:
patent: 4545253 (1985-10-01), Avicola
patent: 5227623 (1993-07-01), Heffner
patent: 5844235 (1998-12-01), Tachikawa et al.
patent: 6061124 (2000-05-01), Nyman et al.
patent: 6493074 (2002-12-01), Imamura et al.
patent: 6559946 (2003-05-01), Davidson et al.
patent: 6614511 (2003-09-01), Sakairi et al.
patent: 6687008 (2004-02-01), Peale et al.

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