Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Patent
1998-09-02
2000-08-22
Palmer, Phan T. H.
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
385 12, 385123, G02B 602
Patent
active
06108476&
ABSTRACT:
The present invention discloses a novel photocatalyst optical fiber and a novel method for activating the photocatalyst optical fiber. The photocatalyst optical fiber comprises at least an optical fiber having a core and a light input end, a photocatalyst layer including photocatalyst disposed partially or entirely on the core, wherein light is introduced from the light input end into the core and the light reflects repeatedly inside of the core, wherein said light leaks gradually from the core to the photocatalyst layer, and wherein the photocatalyst layer is activated by irradiation of the light. The method for activating the photocatalyst optical fiber comprises (a) providing at least an optical fiber, each having a photocatalyst layer i.e. photocatalyst film including photocatalyst, in which the photocatalyst layer is partially or entirely disposed on the optical fiber, (b) introducing light into the optical fiber, (c) letting the light to reflect repeatedly inside of the optical fiber, and (d) letting the light to leak gradually from the optical fiber to the photocatalyst layer, whereby the photocatalyst layer is activated by irradiation of the light. Therefore, the present invention can efficiently activate the photocatalyst on the optical fiber by irradiating directly light leaked from the optical fiber.
REFERENCES:
patent: 5875384 (1999-02-01), Peill et al.
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