Appeal No. 2000-2041
Application 09/014,148
4 of the specification, Appellants disclose that figure 1 shows
filter 100 which takes the output 111 of a broad-spectrum light
source 101 and converts it to a signal 113 having one or more
discrete spectral lines at selected wavelengths. The output of
the light source 101 is applied to a channel filter 103. The
output of channel filter 103 is a signal having a spectrum
comprising a series of discrete spectral lines shown at 112. The
output of channel filter 103 is applied to a channel selector
105. The channel selector 105 separates the desired spectral
lines from the output of channel filter 103 to generate output
signal 113. The channel filter 103 is constructed from a fiber
Bragg reflector.
Independent claim 1 is reproduced as follows:
1. A filter for generating an output light signal having
one or more output spectral lines selected from a plurality of
potential spectral lines included in an input light signal, said
filter comprising:
a channel filter for filtering said input light signal to
create a notched light signal having a spectrum devoid of light
at a first wavelength; and
a variable wavelength reflector connected to said channel
filter for reflecting a portion of the light leaving said channel
filter, said reflected light having a wavelength equal to a
2
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Last modified: November 3, 2007