Optical filter doped with rare earth elements and used with optical fibers
作者： Izumi Sankawa , Tomonori Kashiwara , Hiroo Kanamori , Akira Urano
DOI:
关键词: Attenuation 、 Materials science 、 Range (particle radiation) 、 Rare earth 、 Optical filter 、 Optical fiber 、 Optics 、 Doping 、 Rare-earth element 、 Cutoff function
摘要: An object of this invention is to provide an optical filter which has higher mass-producibility and economy. This feature can be realized by doped a rare earth element into the region made glass material transmit light. In case that Er Tm are as region, ratio α /α between contribution attenuation set in range from about 1 1/25 for 1.5 μm band range, whereby wavelength retained above 50 dB/m realize required cutoff function.
lens.org 参考文章(12)
David Edward Charlton, Douglas Warren Hall, Douglas Reed Cole, Optical fiber amplifier with filter ,(1991)
ELIAS SNITZER, Optical fiber lasers and amplifiers optical fiber communication conference. ,(1988) , 10.1364/OFC.1989.TUG3
Shaoul Ezekiel, Elias Snitzer, Super radiant light source ,(1985)
Frank V. DiMarcello, Lee L. Blyler, Ultraviolet absorbers in optical fiber coatings ,(1980)
Richard P. Tumminelli, Farhad Hakimi, High-power mode-selective optical fiber laser ,(1991)
Elias Snitzer, Ion doped, fused silica glass fiber laser ,(1987)
Robert M. Hawk, Douglas W. Hall, Fiber optic coupling filter and amplifier ,(1991)
Mark Andrew Newhouse, Douglas Warren Hall, Fiber amplifier having modified gain spectrum ,(1991)
Masataka Shirasaki, Ring laser employing unidirectional attenuator ,(1992)
Siegmar Schmidt, Optical attenuator used with optical fibers and compensation means ,(1993)