Optical waveguides – Optical fiber waveguide with cladding
Patent
1996-12-27
1998-11-24
Palmer, Phan T.H.
Optical waveguides
Optical fiber waveguide with cladding
385140, G02B 602
Patent
active
058419268
ABSTRACT:
Disclosed are optical fibers for optical attenuation comprising a core and a cladding, wherein the cladding comprises two or more parts different from each other in their refractive indices and/or the attenuating dopant existence. By using the optical fibers for optical attenuation of the present invention, an optical attenuator which can effectively reduce the effect of cladding mode upon coupling of optical fibers and is excellent in characteristic stability can be manufactured at a low cost.
REFERENCES:
patent: 4610506 (1986-09-01), Tokunaga et al.
patent: 5509101 (1996-04-01), Gilliland et al.
Ariga Yumi
Kumagai Akira
Mitachi Seiko
Morishita Yuichi
Muta Ken-ichi
Nippon Telegraph and Telephone Corporation
Palmer Phan T.H.
Showa Electric Wire & Cable Co. Ltd.
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