Method of assembling a fiber optic preform from discrete preform

Details Method of assembling a fiber optic preform from discrete preform Method of assembling a fiber optic preform from discrete preform

1989-12-07

1990-12-18

Lacey, David L.

Glass manufacturing

Processes

Forming product or preform from molten glass

350 9633, 65 61, C03C 2502

Patent

active

049783777

ABSTRACT:
A method of providing a preform for a polarization-maintaining optical fiber, starting from a basic preform (1) having two orthogonal planes of symmetry intersecting along its axis, and mechanically applying two discrete preformed oblong elements (15) of silica doped with boron oxide on the outside face of said basic preform symmetrically about the first plane (20), and two oblong elements of silica doped with titanium oxide on the outside face of said basic preform and symmetrically about the second plane (30). The shapes of the basic preform and the four oblong elements are selected to define a substantially solid cylinder.

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patent: 4681399 (1987-07-01), Hicks
Stolen et al., Substrate-Tube Lithography for Optical Fibers, Electronics Letters, vol. 18, No. 18, pp. 764-765, 1982.
Birch et al., Fabrication of Polarisation-Maintaining Fibers Using Gas Phase Etching, Electronics Letters, vol. 18, No. 24, pp. 1036-1038, 1982.
Noda et al., Polarization Maintaining Fibers and their Applications, Journal of Lightwave Technology, vol. LT-4, No. 8, Aug. '86, pp. 1071-1089.
8 km-long Polarisation-Maintaining Fibre with Highly Stable Polarisation State; Sasaki, Hosaka, Takada and Noda; Electronics Letters, Sep. 15, 1983.

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