Title :
A 7×6 optical fiber grating demultiplexer-multiposition switch for 0.64-0.88 μm band
Author :
Fukushima, Takehiro ; Sakamoto, Toyokazu
Author_Institution :
Dept. of Syst. Eng., Okayama Prefectural Univ., Japan
fDate :
5/1/1996 12:00:00 AM
Abstract :
An optical fiber grating demultiplexer-multiposition switch having seven demultiplexing channels and six position-switching channels is demonstrated. This device consists of a unique fiber array in which 42 output fibers are aligned radially around an input fiber, a single gradient-index (GRIN)-rod lens and a rotatable blazed reflection grating. In this device, seven demultiplexing channels can be switched to six different directions by rotating blazed reflection grating. Therefore, this device can realize total transmission channels of 42. The device had a working band of 0.64-0.88 μm, a channel separation of 35-42 nm and a 3 dB band width of 18-22 nm. The deviations of center wavelengths among the switching channels were suppressed less than 3 nm
Keywords :
demultiplexing; demultiplexing equipment; diffraction gratings; gradient index optics; lenses; optical communication equipment; optical switches; wavelength division multiplexing; μm band; 0.64 to 0.88 mum; 7×6 optical fiber grating demultiplexer-multiposition switch; GRIN-rod lens; aligned radially; center wavelengths; channel separation; demultiplexing channels; fiber array; input fiber; output fibers; position-switching channels; rotatable blazed reflection grating; rotating blazed reflection grating; single gradient-index rod lens; switching channels; total transmission channels; working band; Demultiplexing; Fiber gratings; Lenses; Optical devices; Optical fiber devices; Optical fibers; Optical films; Optical filters; Optical reflection; Optical switches;
Journal_Title :
Lightwave Technology, Journal of
