FR2441858B1 - - Google Patents
Info
- Publication number
- FR2441858B1 FR2441858B1 FR7832499A FR7832499A FR2441858B1 FR 2441858 B1 FR2441858 B1 FR 2441858B1 FR 7832499 A FR7832499 A FR 7832499A FR 7832499 A FR7832499 A FR 7832499A FR 2441858 B1 FR2441858 B1 FR 2441858B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7832499A FR2441858A1 (en) | 1978-11-17 | 1978-11-17 | Mono or multi-mode optical fibre - has central monomode core with multimode sheath esp. for data transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7832499A FR2441858A1 (en) | 1978-11-17 | 1978-11-17 | Mono or multi-mode optical fibre - has central monomode core with multimode sheath esp. for data transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2441858A1 FR2441858A1 (en) | 1980-06-13 |
FR2441858B1 true FR2441858B1 (en) | 1983-03-11 |
Family
ID=9215006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7832499A Granted FR2441858A1 (en) | 1978-11-17 | 1978-11-17 | Mono or multi-mode optical fibre - has central monomode core with multimode sheath esp. for data transmission |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2441858A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7656578B2 (en) | 1997-03-21 | 2010-02-02 | Imra America, Inc. | Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking |
US8761211B2 (en) | 1998-11-25 | 2014-06-24 | Imra America, Inc. | Multi-mode fiber amplifier |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63199328A (en) * | 1987-02-16 | 1988-08-17 | Fuji Photo Film Co Ltd | Optical wavelength converting element |
US4829529A (en) * | 1987-06-15 | 1989-05-09 | Spectra-Physics, Inc. | Laser diode pumped fiber lasers with pump cavity |
GB2355541A (en) * | 1999-10-23 | 2001-04-25 | Marconi Electronic Syst Ltd | Optic fibre with monomode core and multimode core or layer |
WO2014057299A1 (en) | 2012-10-11 | 2014-04-17 | Draka Comteq Bv | High bandwidth multimode optical fiber optimized for multimode and single-mode transmissions |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932162A (en) * | 1974-06-21 | 1976-01-13 | Corning Glass Works | Method of making glass optical waveguide |
US4070091A (en) * | 1976-04-16 | 1978-01-24 | Northern Telecom Limited | Optical fibre with enhanced security |
BR7705077A (en) * | 1976-09-08 | 1978-06-06 | Int Standard Electric Corp | OPTICAL WAVES GUIDE, WITH ULTRA-HIGH TENSILE RESISTANCE, AND THE MANUFACTURING METHOD OF THE SAME |
-
1978
- 1978-11-17 FR FR7832499A patent/FR2441858A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7656578B2 (en) | 1997-03-21 | 2010-02-02 | Imra America, Inc. | Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking |
US8761211B2 (en) | 1998-11-25 | 2014-06-24 | Imra America, Inc. | Multi-mode fiber amplifier |
US9153929B2 (en) | 1998-11-25 | 2015-10-06 | Imra America, Inc. | Mode-locked multi-mode fiber laser pulse source |
US9450371B2 (en) | 1998-11-25 | 2016-09-20 | Imra America, Inc. | Mode-locked multi-mode fiber laser pulse source |
Also Published As
Publication number | Publication date |
---|---|
FR2441858A1 (en) | 1980-06-13 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |