Low strain optical fiber coil

Details Low strain optical fiber coil Low strain optical fiber coil

1988-08-29

1989-11-28

Lee, John D.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 4BE, 242 47, 242174, 350 9610, 356350, G02B 602

Patent

active

048833371

ABSTRACT:
An optical fiber coil is formed by winding successive loops of a fiber in a toroidal helix to form a self-supporting ring. No coilform or adhesives are necessary, resulting in relaxed boundary conditions at the outside of the fiber jacket, and in an overall reduction of thermally-induced strain, as compared to existing coil constructions. One low-stress mounting includes a trellis or spoke-like frame structure which frictionally supports the coil about its circumference. Another mounting includes a bouyant bead support structure. In a third mounting, a filament suspends the coil from a frame. The coil may be suspended within an isothermal enclosure to further reduce thermal effects.

REFERENCES:
patent: 4163911 (1979-08-01), Simes et al.
patent: 4408378 (1983-10-01), Ketteringham et al.
patent: 4699451 (1987-10-01), Mohr
patent: 4743115 (1988-05-01), Arditty et al.
patent: 4768856 (1988-09-01), Hofmann et al.
patent: 4781461 (1988-11-01), Baron et al.
patent: 4793708 (1988-12-01), Bednarz
patent: 4802731 (1989-02-01), Maschek et al.

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