Wavelength selective optical device and method of tuning wavelength characteristics
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United States of America Patent
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Jul 22, 2008
Grant Date -
Sep 13, 2007
app pub date -
Mar 8, 2006
filing date -
Mar 8, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a wavelength selective optical device, a lens for transmitting multiplexed optical signals having a plurality of wavelengths is provided to face an end of a first optical fiber such that light output from the end of the first optical fiber is converted into parallel light, and an optical filter is provided at a location to which the parallel light output from the lens is input. A second optical fiber is provided at a location in which the light reflected from the optical filter is input to the lens again to be focused by the lens. The lens is configured by bonding the ends of two gradient index rod lenses having different refractive index distribution constants and the substantially same outer diameter to each other to align their optical axes to each other.
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