Optical waveguides – Optical fiber waveguide with cladding
Patent
1994-06-09
1997-04-15
Bovernick, Rodney B.
Optical waveguides
Optical fiber waveguide with cladding
385141, G02B 602
Patent
active
056218435
ABSTRACT:
The present invention is directed at a lightguide, at a method of making the lightguide, and at a method of using the lightguide for the stable transmission of UV light. The lightguide includes a core, a cladding overlying the core, and a resistive element overlying the cladding for elevating the temperature of the fiber. The resistive element has sufficient resistance to produce heat when conducting electric current. Alternatively, the fiber can be heated by irradiating the core with IR light at an OH absorption wavelength. Both of these means for heating the lightguide can be enhanced if the cladding consists of a microporous silica layer. Moreover, the UV transmission properties of the fiber are further enhanced by impregnating the microporous silica layer with hydrogen or deuterium gas. A preferred embodiment of the invention also uses a hermetic coating over the microporous silica layer to retard the diffusion of the gas from the fiber.
REFERENCES:
patent: 3732425 (1973-05-01), Ellert et al.
patent: 4389230 (1983-06-01), Modone et al.
patent: 4737002 (1988-04-01), Boucouvalas
patent: 4773413 (1988-09-01), Hussein et al.
patent: 4776665 (1988-10-01), Oestreich
patent: 4979796 (1990-12-01), Cardarelli et al.
patent: 5235659 (1993-08-01), Atkins et al.
patent: 5242437 (1993-09-01), Everett et al.
patent: 5495548 (1996-02-01), Bilodeau et al.
Bilodeau et al, "Photosensitization of optical fiber and silica-on-silicon/silica waveguides", Optics Letters, vol. 18, No. 12, Jun. 15, 1993, pp. 953-954.
Malo et al, "Elimination of photoinduced absorption in Ge-doped silica fibers by annealing of ultraviolet colour centers", Electronic Letters, 28(17), Jun. 1992.
Simmons et al, "Photosenisitivity of solgel-derived germanosilicate planar waveguides", Optics Letters, vol. 18, No. 1, Jan. 1, 1993, pp. 25-27.
Bovernick Rodney B.
CeramOptec Industries Inc.
Sanghavi Hemang
Skutnik Bolesh J.
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