초록 ▼

A hydrolyzing flame technique is used to build up glass soots of at least two different compositions upon a rotating starting member. The process is repeated until the soots define at least one helically-oriented body of soot of one composition completely enveloped by a soot of a second composition.

A hydrolyzing flame technique is used to build up glass soots of at least two different compositions upon a rotating starting member. The process is repeated until the soots define at least one helically-oriented body of soot of one composition completely enveloped by a soot of a second composition. The soot-covered starting member is then subjected to heat to fuse it whereupon the soots are fused into compositions exhibiting different indices of refraction. The member can then be drawn into a elongate structure comprising an optical waveguide extending helically through the body of the structure.

대표청구항 ▼

An elongate optical waveguide system having a longitudinal axis and adapted to support the propagation of electromagnetic signals along the length thereof, comprising: a core member formed of a dielectric material having a first index of refraction and disposed in a helical locus about said axis; a

An elongate optical waveguide system having a longitudinal axis and adapted to support the propagation of electromagnetic signals along the length thereof, comprising: a core member formed of a dielectric material having a first index of refraction and disposed in a helical locus about said axis; a second core member formed of a dielectric material spaced in a helical locus about said axis substantially concentric with said first core member, said second core member being disposed radially outwardly of said first core member; a cladding member formed of a dielectric material having an index of refraction less than the index of refraction of said core members and enveloping the helix defined by each core member.