SINGLE RESONANT BAND, TUNABLE OPTICAL FIBER WAVELENGTH FILTER BASED ON LONG-PERIOD FIBER CRATING
摘要
An optical filter that is tunable over a wide portion of the spectrum, such as the infrared portion. The filter has a core (62) of silica fiber with a first cladding layer (64) of silica fiber disposed thereon. A long period grating (80) is disposed on the core (62). A second electro-cladding layer (66) is disposed on the first cladding layer. The first cladding layer (64) is ultra thin so as to support only a single resonant band over the spectral portion. The resonant band is tunable to different wavelengths in the spectral portion by a voltage applied to the second electro-optic layer (66). The electro-optic layer (66) us a copolymer that has a refractive index less than that of the silica fiber material.
申请公布号
WO02084360(A1)
申请公布日期
2002.10.24
申请号
WO2001US07827
申请日期
2001.03.05
申请人
THE PENN STATE RESEARCH FOUNDATION;ZHANG, QIMING;LIU, HONGYU;REICHARD, KARL;KURTZ, PAUL;YIN, SHIZHOU