Single mode fibre and method of manufacture

Details Single mode fibre and method of manufacture Single mode fibre and method of manufacture

1980-09-30

1982-05-04

Fisher, Richard V.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

65 312, 350 9634, 427163, C03B 37075, G02B 5172

Patent

active

043279651

ABSTRACT:
Single mode optical fibre for operation in the wavelength range 1.5 to 1.7 microns is made by first depositing an optically absorbing layer of silica doped with oxides of boron and/or phosphorus upon the bore of a silica substrate tube. The optical absorbing layer has a higher refractive index than silica, and on it is deposited a transparent optical cladding layer of matched index, and then a higher index optical core layer. The bore of the coated tube is then collapsed to form a solid cross-section optical fibre preform from which optical fibre can be drawn.

REFERENCES:
patent: 4009014 (1977-02-01), Black et al.
patent: 4230396 (1980-10-01), Olshansky et al.
Ainslie et al., "Preparation of . . . Single-Mode Fibre", Electronics Letters, vol. 15, No. 14, Jul. 5, 1979, pp. 411-413.
Miya et al., "Ultimate Low-Loss Single-Mode Fibre . . . ", Electronics Letters, vol. 15, No. 4, Feb. 15, 1979, pp. 106-108.

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