JPS55117105A - Optical guide tube - Google Patents

Optical guide tube

Info

Publication number
JPS55117105A
JPS55117105A JP2332279A JP2332279A JPS55117105A JP S55117105 A JPS55117105 A JP S55117105A JP 2332279 A JP2332279 A JP 2332279A JP 2332279 A JP2332279 A JP 2332279A JP S55117105 A JPS55117105 A JP S55117105A
Authority
JP
Japan
Prior art keywords
glass
optical guide
guide tube
cylindrical metal
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2332279A
Other languages
Japanese (ja)
Inventor
Shigeki Sakaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2332279A priority Critical patent/JPS55117105A/en
Publication of JPS55117105A publication Critical patent/JPS55117105A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

PURPOSE: To improve the fracture strength of the optical guide tube and maintain the safety of long-term strength by sealing cylindrical metal or metal wires in the glass of the circumferential portion of the optical guide tube.
CONSTITUTION: The circumference of core glass 1 is coated with the clad glass 2 having a refractive index smaller than the refractive index of the core glass 1 and cylindrical metal is sealed into this clad glass 2. It is also possible to seal fibrous metal wires therein place of the cylindrical metal. In this way, the optical guide tube may be made difficult to break. When the metal of the coefficient of thermal expansion slightly larger than the coefficient of thermal expansion of the sealed glass is used, compressive stress remains in the glass through cooling from the sealing temperature down to ordinary temperature, and this makes the optical guide difficult to break. In some instances, the flaw existing in the glass surface of the outer side grows owing to moisture and causes the glass to crack, but the growth of the flow to the inner glass is prevented by the cylindrical metal. In this way, the intensity of the optical guide is improved.
COPYRIGHT: (C)1980,JPO&Japio
JP2332279A 1979-03-02 1979-03-02 Optical guide tube Pending JPS55117105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2332279A JPS55117105A (en) 1979-03-02 1979-03-02 Optical guide tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2332279A JPS55117105A (en) 1979-03-02 1979-03-02 Optical guide tube

Publications (1)

Publication Number Publication Date
JPS55117105A true JPS55117105A (en) 1980-09-09

Family

ID=12107345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2332279A Pending JPS55117105A (en) 1979-03-02 1979-03-02 Optical guide tube

Country Status (1)

Country Link
JP (1) JPS55117105A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098849A (en) * 1973-12-27 1975-08-06
JPS50110341A (en) * 1974-02-07 1975-08-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098849A (en) * 1973-12-27 1975-08-06
JPS50110341A (en) * 1974-02-07 1975-08-30

Similar Documents

Publication Publication Date Title
DE3174375D1 (en) Optical waveguide filament and a method of forming a preform therefor
AU566335B2 (en) Fluorine doped optical waveguide
JPS5727203A (en) Optical fiber waveguide
KR850000075A (en) Optical fiber and its manufacturing method
ES8302919A1 (en) Optical waveguide fiber, and methods of forming an optical waveguide fiber, and an optical waveguide preform.
FI833532A (en) NEDSAENKBAR MAETSOND FOER MAETNINGAR AV METALLER I VAETSKEFORM
JPS55117105A (en) Optical guide tube
JPS57115512A (en) Manufacture for optical fiber connector
ES296706Y (en) SLEEVE FOR INSULATING GASES OR SOLID MATERIALS IN A POT CONTAINING METAL CAST.
JPS57144890A (en) Heat pipe of profiled cross section and its manufacture
JPS57196728A (en) Manufacture of base material for optical fiber
JPS57130002A (en) Temperature compensating method of optical fiber cable
JPS5758113A (en) Optical fiber
JPS5684327A (en) Manufacture of optical fiber
JPS5688850A (en) Heat-resistant optical fiber and its preparation
JPS57186722A (en) Reinforcing method for optical fiber connection part
JPS55144437A (en) Producing optical fiber matrix
JPS537251A (en) Connection of optical fibers
UA7075A1 (en) Tube
JPS57198405A (en) Structure of heat resisting optical fiber core
JPS57196134A (en) Liquid identifying method
JPS5431756A (en) Terminating method of silicone clad optical fibers
JPS5486089A (en) Nuclear fuel rod
JPS55156863A (en) Deciding method for lamp oil property
JPS5551325A (en) Manufacture of thermocouple