| 摘要 |
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.
|
