Optical fiber filter

Details Optical fiber filter Optical fiber filter

G - Physics

02

B

G02B 6/12 (2006.01) G02B 5/20 (2006.01) G02B 5/26 (2006.01) G02B 6/255 (2006.01) G02B 6/34 (2006.01) G02B 6/38 (2006.01)

Patent

CA 2188335

The present invention relates to an optical fiber filter provided with a portion which selectively reflects or transmits light of a specific wavelength, this portion comprised of a multimode optical fiber in which the refractive index of the core changes periodically along the longitudinal direction thereof. Furthermore, this multimode optical fiber has an input end and an output end, with at least the input end of the multimode optical fiber being connected to a single mode optical fiber. As a result of forming an optical fiber filter in this way, it is possible to realize an optical fiber filter that exhibits no transmission loss at wavelengths other than the center wavelength.

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