Title :
Laminated polarizers exhibiting high performance over a wide range of wavelength
Author :
Shiraishi, Kazuo ; Hatakeyama, Hiroshi ; Matsumoto, Hiroyuki ; Matsumura, Kazuhito
Author_Institution :
Fac. of Eng., Utsunomiya Univ., Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
A laminated polarizer exhibiting high performance over a wide range of wavelengths has been fabricated for the first time. The polarizer consists of alternate layers of laminated silica film and metal-included semiconductor ultra-thin film as the transparent and absorptive layers, respectively. Extinction ratios of greater than 50 dB with insertion losses of less than 0.4 dB have been obtained over the wavelength range of 0.8-1.55 μm. At the wavelength 0.98 μm where previously no viable laminated polarizer had been available, the extinction ratio is as high as greater than 60 dB and the insertion loss less than 0.3 dB
Keywords :
light propagation; optical films; optical losses; optical polarisers; semiconductor thin films; 0.3 dB; 0.4 dB; SiO2; absorptive layers; alternate layers; extinction ratios; high performance; insertion losses; laminated polarizer; laminated silica film; metal-included semiconductor ultra-thin film; transparent; wavelength range; Extinction ratio; Inorganic materials; Insertion loss; Optical fiber polarization; Optical films; Optical losses; Optical materials; Optical polarization; Semiconductor films; Semiconductor materials;
Journal_Title :
Lightwave Technology, Journal of
