EP0145030A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of forming an optical waveguide fiber
Assignee: Corning Glass Works
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Filing: 1982-03-25
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Granted: —
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Expires: 2002-03-25
Abstract
Abstract A method is disclosed comprising the steps of depositing on a rotating starting member (131 a first coating (130) of particulate glass, depositing on the outer surface of said first coating (130) another coating (134, 135. 136) of particulate glass, removing said starting member (131), and forming an optical waveguide fiber from the resultant soot preform. The step of depositing another coating comprises depositing a second coating (134) of particulate glass on the outer surface of said first coating (130). the refractive index of said second coating (134) being lower than that of said first coating (130), depositing on diametrically opposed portions of said second coating (134) first and second longitudinally extending regions (135) of glass soot having a thermal coefficient of expansion different from that of the said second coating (134), and depositing on the outer surface of the resultant soot body a coating of cladding soot (137) having a thermal coefficient of expansion similar to that of said second coating (134) and having a refractive index equal to or lower than that of said second coating (134).
Inventors
- 👤 Michael Gregg Blankenship
- 👤 Donald Bruce Keck
- 👤 Arnab Sarkar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/105; C; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/01205; C03B37/01211; C03B37/01217; C03B37/014; C03B37/01446; C03B37/01466; C03B37/01486; C03B37/018; C03B37/01853; C03B37/01861; C03B37/01869; C03B37/02; C03B37/025; C03B2201/00; C03B2201/02; C03B2201/06; C03B2201/08; C03B2201/10; C03B2201/20; C03B2201/28; C03B2201/30; C03B2201/31; C03B2201/40; C03B2201/42; C03B2203/00; C03B2203/10; C03B2203/12; C03B2203/30; C03B2203/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
A method of forming an optical waveguide fiber, comprising the steps of depositing on a rotating starting member (131) a first coating (130) of particulate glass, depositing on the outer surface of said first coating (130) another coating (134, 135, 136) of particulate glass, removing said starting member (131), and forming an optical waveguide fiber from the resultant soot preform, the step of depositing another coating comprising depositing a second coating (134) of particulate glass on the outer surface of said first coating (130), the refractive index of said second coating (134) being lower than that of said first coating (130) , depositing on diametrically opposed portions of said second coating (134) first and second longitudinally extending regions (135) of glass soot having a thermal coefficient of expansion different from that of the said second coating (134), and depositing on the outer surface of the resultant soot body a coating of cladding soot (137) having a thermal coefficient of expansion similar to that of said second coating (134) and having a refractive index equal to or lower than that of said second coating (134).
Claim 2
Independent Claim
184 words
A method of forming an optical waveguide fiber, comprising the steps of depositing on a rotating starting member (131) a first coating (130) of particulate glass, depositing on the outer surface of said first coating (130) another coating (134, 135, 136) of particulate glass, removing said starting member (131), and forming an optical waveguide fiber from the resultant soot preform, the step of depositing another coating comprising depositing a second coating (134) of particulate glass on the outer surface of said first coating (130), the refractive index of said second coating (134) being lower than that of said first coating (130) , depositing on diametrically opposed portions of said second coating (134) first and second longitudinally extending regions (135) of glass soot having a thermal coefficient of expansion different from that of the said second coating (134), and depositing on the outer surface of the resultant soot body a coating of cladding soot (137) having a thermal coefficient of expansion similar to that of said second coating (134) and having a refractive index equal to or lower than that of said second coating (134).
Claim 3
Dependent Claim
91 words
A method in accordance with claim 1, wherein the step of depositing said diametrically opposed longitudinally extending regions (135) of glass soot comprises halting rotation of said starting member (131), moving a flame hydrolysis burner (132) longitudinally with respect to said starting member (131) while depositing a first crescent-shaped longitudinally extending region of glass soot, rotating said mandrel 180° and thereafter again halting starting member rotation, and moving said flame hydrolysis burner (132) longitudinally with respect to said starting member (131) while depositing a second longitudinally extending region of glass soot.
Claim 4
Dependent Claim
122 words
3 . A method in accordance with claim 2, wherein the step of depositing said diametrically opposed regions further comprises the steps of rotating said starting member 90° and halting rotation thereof, depositing a layer of soot (136) on the surface of said second coating (134) which extends between said first and second longitudinally extending regions (135) of soot, rotating said starting member (131) 180° and halting rotation thereof, and moving said burner (132) longitudinally with respect to said starting member (131) while depositing a fourth longitudinally extending region (136) of glass soot, the composition of said third and fourth longitudinally extending soot regions (136) being different from that of said first and second longitudinally extending regions (134, 135) of glass soot.
Claim 5
Dependent Claim
75 words
A method in accordance with claim 1, wherein the step of depositing diametrically opposed longitudinally extending regions (135) of glass soot comprises rotating said starting member (131), providing longitudinal movement between a flame hydrolysis burner (132) and said starting member (131), providing to said burner (132) reactant vapors for forming a base glass soot, and supplying said burner (132) with a pulse of a second reactant vapor each 180° of rotation of said burner (132).
References Cited (Backward Citations)
No citation records indexed.
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