JPS5630102A - Optical transmission wire - Google Patents

Optical transmission wire

Info

Publication number
JPS5630102A
JPS5630102A JP10622679A JP10622679A JPS5630102A JP S5630102 A JPS5630102 A JP S5630102A JP 10622679 A JP10622679 A JP 10622679A JP 10622679 A JP10622679 A JP 10622679A JP S5630102 A JPS5630102 A JP S5630102A
Authority
JP
Japan
Prior art keywords
contg
thermal expansion
core
coefft
sio
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
JP10622679A
Other languages
Japanese (ja)
Inventor
Junjiro Goto
Koji Okamura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10622679A priority Critical patent/JPS5630102A/en
Publication of JPS5630102A publication Critical patent/JPS5630102A/en
Pending legal-status Critical Current

Links

Landscapes

  • Glass Compositions (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE: To obtain an optical transmission wire of good quality and high numerical aperture by using the SiO2 contg. ≥25wt% GeO2 for increasing refractive index as a core and constituting the clad contg. B2O3 of the amount so controlled as to have a coefft. of thermal expansion nearly equal to that of said core in a heat-resistant glass tube having a difference in thermal expansion within a predetermined range from these.
CONSTITUTION: The SiO2 (G) contg. ≥25wt%, for example, 26wt%, GeO2 for increasing refractive index is selected as a core material. The SiO2 (H) contg. 22wt% B2O3 having a coefft. of thermal expansion nearly equal to the coefft. of thermal expansion 2.45×10-7/°C thereof is selected as a clad material. The refractive index of the core material of this time is 1.5002, which is larger than the refractive index 1.4472 of the clad. If the core and clad are formed in a glass tube composed of the SiO2 (F) contg. ≥4% material of which the difference in the coefft. of thermal expansion from these materials comes within 16.5×10-7/°C, for example, B2O3, and the glass tube is spun, the optical transmission wire of good quality and high numerical aperture is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP10622679A 1979-08-20 1979-08-20 Optical transmission wire Pending JPS5630102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10622679A JPS5630102A (en) 1979-08-20 1979-08-20 Optical transmission wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10622679A JPS5630102A (en) 1979-08-20 1979-08-20 Optical transmission wire

Publications (1)

Publication Number Publication Date
JPS5630102A true JPS5630102A (en) 1981-03-26

Family

ID=14428211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10622679A Pending JPS5630102A (en) 1979-08-20 1979-08-20 Optical transmission wire

Country Status (1)

Country Link
JP (1) JPS5630102A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233546A (en) * 1975-09-08 1977-03-14 Corning Glass Works Optical fiber containing p2* 05 and ge02
JPS5288349A (en) * 1976-01-20 1977-07-23 Nippon Selfoc Co Ltd Optical fiber for communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233546A (en) * 1975-09-08 1977-03-14 Corning Glass Works Optical fiber containing p2* 05 and ge02
JPS5288349A (en) * 1976-01-20 1977-07-23 Nippon Selfoc Co Ltd Optical fiber for communication

Similar Documents

Publication Publication Date Title
ES478250A1 (en) Multicomponent optical waveguide having index gradient
GB2059944B (en) Fabrication method of optical fibre preforms
JPS5565909A (en) Optical fiber
JPS55116641A (en) Optical glass
JPS57123836A (en) Preparation optical fiber having single mode of internal stress and double refraction
JPS56121003A (en) Single-mode transmitting optical fiber and its manufacture
JPS55162443A (en) Optical fiber and manufacture of optical fiber preform
JPS5521059A (en) Optical fiber
JPS5645848A (en) Method of controlling optical fiber drawing from glass preform
JPS5630102A (en) Optical transmission wire
JPS5551732A (en) Optical glass
JPS56121002A (en) Optical fiber for light transmission and its manufacture
JPS569708A (en) Image fiber
JPS5654237A (en) Preparation of optical fiber for infrared
JPS5533128A (en) Photo switch
JPS5678808A (en) Image fiber
JPS5397849A (en) Single mode optical fiber
JPS5434844A (en) Reinforcing method of glass fiber for optical transmission
JPS5840521A (en) Production of photocoupler
ES8103388A1 (en) A method of making glass optical waveguides or waveguide blanks.
JPS5238941A (en) Optical fiber
JPS56160341A (en) Optical fiber
JPS569706A (en) Optical transmission line of aggregate type
JPS5699304A (en) Production of combined rod lens
JPS54157632A (en) Attenuator for optical fibers