Apparatus and method for measuring wavelength of an optical light
First Claim
1. A measuring-wavelength apparatus comprising:
- a beam splitter splitting an incoming light into a first beam and a second beam;
a first optical sensor receiving the first beam from the beam splitter and outputting a first output signal;
a signal-attenuation component receiving and attenuating the second beam;
a second optical sensor receiving the attenuated second beam and outputting a second output signal; and
a processing unit having a reference table which pre-records various optical losses and corresponding wavelengths, in use of calculating a difference between the first and the second output signals to achieve an optical loss of said light, and then transforming the optical loss into the wavelength of the light in view of the reference table.
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Accused Products
Abstract
A measuring-wavelength apparatus includes a beam splitter (2), a first optical sensor (6), a second optical sensor (7), a signal-attenuation component (5) and a processing unit (8). A measuring-wavelength method comprising: splitting an incoming light into a first beam and a second beam; transforming the first beam into a first output signal; attenuating the second beam by using a signal-attenuation component; transforming the attenuated second beam into a second output signal; calculating a difference between the first and the second output signals to achieve an optical loss of the light; and in view of the optical loss, looking up a reference table to obtain a wavelength of the light.
4 Citations
27 Claims
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1. A measuring-wavelength apparatus comprising:
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a beam splitter splitting an incoming light into a first beam and a second beam;
a first optical sensor receiving the first beam from the beam splitter and outputting a first output signal;
a signal-attenuation component receiving and attenuating the second beam;
a second optical sensor receiving the attenuated second beam and outputting a second output signal; and
a processing unit having a reference table which pre-records various optical losses and corresponding wavelengths, in use of calculating a difference between the first and the second output signals to achieve an optical loss of said light, and then transforming the optical loss into the wavelength of the light in view of the reference table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A measuring-wavelength method comprising:
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splitting an incoming light into a first beam and a second beam;
transforming the first beam into a first output signal;
attenuating the second beam by using a signal-attenuation component;
transforming the attenuated second beam into a second output signal;
calculating a difference between the first and the second output signals to achieve an optical loss of said light; and
in view of the optical loss, looking up a reference table to obtain a wavelength of the light. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A measuring-wavelength apparatus comprising:
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a beam splitter splitting an incoming light into a first beam and a second beam;
a first optical sensor receiving the first beam from the beam splitter and emitting a first output signal;
a signal-attenuation component receiving and attenuating the second beam;
a second optical sensor receiving the attenuated second beam and emitting a second output signal;
a processing unit receiving the first and the second output signals, calculating a difference between the first and the second output signals to achieve an optical loss of the light; and
a reference table recording various optical losses and corresponding wavelengths. - View Dependent Claims (26, 27)
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Specification