ATE46792T1 - Fiberoptischer verstaerker. - Google Patents
Fiberoptischer verstaerker.Info
- Publication number
- ATE46792T1 ATE46792T1 AT83304334T AT83304334T ATE46792T1 AT E46792 T1 ATE46792 T1 AT E46792T1 AT 83304334 T AT83304334 T AT 83304334T AT 83304334 T AT83304334 T AT 83304334T AT E46792 T1 ATE46792 T1 AT E46792T1
- Authority
- AT
- Austria
- Prior art keywords
- fiber
- amplified
- signal
- fibers
- coupling efficiency
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title abstract 9
- 230000008878 coupling Effects 0.000 abstract 4
- 238000010168 coupling process Methods 0.000 abstract 4
- 238000005859 coupling reaction Methods 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 4
- 238000005086 pumping Methods 0.000 abstract 3
- 230000001427 coherent effect Effects 0.000 abstract 2
- 239000013307 optical fiber Substances 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000005286 illumination Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
- G02B6/2826—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
- G02B6/2826—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing
- G02B6/283—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing couplers being tunable or adjustable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
- H01S3/0933—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of a semiconductor, e.g. light emitting diode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
- H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Amplifiers (AREA)
- Glass Compositions (AREA)
- Lasers (AREA)
- Networks Using Active Elements (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Couplings Of Light Guides (AREA)
- Laser Surgery Devices (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/407,136 US4515431A (en) | 1982-08-11 | 1982-08-11 | Fiber optic amplifier |
| EP83304334A EP0103382B1 (de) | 1982-08-11 | 1983-07-27 | Fiberoptischer Verstärker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE46792T1 true ATE46792T1 (de) | 1989-10-15 |
Family
ID=23610756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT83304334T ATE46792T1 (de) | 1982-08-11 | 1983-07-27 | Fiberoptischer verstaerker. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4515431A (de) |
| EP (1) | EP0103382B1 (de) |
| JP (1) | JPS5986023A (de) |
| KR (1) | KR910004170B1 (de) |
| AT (1) | ATE46792T1 (de) |
| AU (1) | AU555325B2 (de) |
| BR (1) | BR8304277A (de) |
| CA (1) | CA1242605A (de) |
| DE (1) | DE3380655D1 (de) |
| IL (1) | IL69372A (de) |
| NO (1) | NO832878L (de) |
Families Citing this family (75)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616898A (en) * | 1980-03-31 | 1986-10-14 | Polaroid Corporation | Optical communication systems using raman repeaters and components therefor |
| US4720160A (en) * | 1981-12-16 | 1988-01-19 | Polaroid Corporation | Optical resonant cavity filters |
| US5096277A (en) * | 1982-08-06 | 1992-03-17 | Kleinerman Marcos Y | Remote measurement of physical variables with fiber optic systems |
| US4635263A (en) * | 1983-07-29 | 1987-01-06 | At&T Bell Laboratories | Soliton laser |
| US4603940A (en) * | 1983-08-30 | 1986-08-05 | Board Of Trustees Of The Leland Stanford Junior University | Fiber optic dye amplifier |
| US4553238A (en) * | 1983-09-30 | 1985-11-12 | The Board Of Trustees Of The Leland Stanford University | Fiber optic amplifier |
| US4938556A (en) * | 1983-11-25 | 1990-07-03 | The Board Of Trustees Of The Leland Stanford Junior University | Superfluorescent broadband fiber laser source |
| US4674830A (en) * | 1983-11-25 | 1987-06-23 | The Board Of Trustees Of The Leland Stanford Junior University | Fiber optic amplifier |
| US4723824A (en) * | 1983-11-25 | 1988-02-09 | The Board Of Trustees Of The Leland Stanford Junior University | Fiber optic amplifier |
| GB2151868B (en) * | 1983-12-16 | 1986-12-17 | Standard Telephones Cables Ltd | Optical amplifiers |
| US4701010A (en) * | 1984-08-30 | 1987-10-20 | Adc Fiber Optics Corporation | Unitary body optical coupler |
| DE3584091D1 (de) * | 1984-10-01 | 1991-10-17 | Polaroid Corp | Verstaerker fuer optischen wellenleiter und laser. |
| DE3673630D1 (de) * | 1985-07-24 | 1990-09-27 | British Telecomm | Dielektrische lichtwellenleitervorrichtung. |
| US4778238A (en) * | 1985-08-01 | 1988-10-18 | Hicks John W | Optical communications systems and process for signal amplification using stimulated brillouin scattering (SBS) and laser utilized in the system |
| GB2180832B (en) * | 1985-08-13 | 1989-07-26 | Simon Blanchette Poole | Fabrication of preforms for the fabrication of optical fibres. |
| SE449673B (sv) * | 1985-09-20 | 1987-05-11 | Ericsson Telefon Ab L M | Optisk forsterkaranordning med brusfilterfunktion |
| US4712075A (en) * | 1985-11-27 | 1987-12-08 | Polaroid Corporation | Optical amplifier |
| DE3689040T2 (de) * | 1986-01-06 | 1994-04-14 | American Telephone & Telegraph | Faseroptisches Einzelmoden-Kommunikationssystem. |
| US4820016A (en) | 1986-02-21 | 1989-04-11 | American Telephone And Telegraph Company, At&T Bell Laboratories | Waveguide-containing communications and sensing systems |
| GB2191357B (en) * | 1986-06-07 | 1990-04-25 | Stc Plc | Optical switching |
| US4707201A (en) * | 1986-08-20 | 1987-11-17 | Canadian Instrumentation And Research Limited | Method of producing polished block type, single mode, evanscent wave directional couplers by means of mass production of the coupler halves |
| US4768849A (en) * | 1986-09-15 | 1988-09-06 | Hicks Jr John W | Filter tap for optical communications systems |
| US4831631A (en) * | 1986-09-29 | 1989-05-16 | Siemens Aktiengesellschaft | Laser transmitter comprising a semiconductor laser and an external resonator |
| JPS63136009A (ja) * | 1986-11-28 | 1988-06-08 | Fujikura Ltd | メモリ制御装置 |
| JPH07120835B2 (ja) * | 1986-12-26 | 1995-12-20 | 松下電器産業株式会社 | 光集積回路 |
| US4782491A (en) * | 1987-04-09 | 1988-11-01 | Polaroid Corporation | Ion doped, fused silica glass fiber laser |
| JPS63309906A (ja) * | 1987-06-10 | 1988-12-19 | Seiko Instr & Electronics Ltd | 光導波結合器 |
| US4835778A (en) * | 1987-09-30 | 1989-05-30 | Spectra-Physics, Inc. | Subpicosecond fiber laser |
| US4815079A (en) * | 1987-12-17 | 1989-03-21 | Polaroid Corporation | Optical fiber lasers and amplifiers |
| IT1215681B (it) * | 1988-01-12 | 1990-02-22 | Pirelli General Plc | Amplificazione di segnali ottici. |
| GB2215906B (en) * | 1988-02-10 | 1992-09-16 | Mitsubishi Electric Corp | Laser device |
| US5037181A (en) * | 1988-04-25 | 1991-08-06 | The Board Of Trustees Of The Leland Stanford Junior University | Claddings for single crystal optical fibers and devices and methods and apparatus for making such claddings |
| GB2218534B (en) * | 1988-05-14 | 1992-03-25 | Stc Plc | Active optical fibre star coupler |
| GB2219127A (en) * | 1988-05-27 | 1989-11-29 | Stc Plc | Lasers and optical amplifiers |
| DE68929397T2 (de) * | 1988-12-07 | 2002-12-19 | The Board Of Trustees Of The Leland Stanford Junior University, Stanford | Breitbandige Superfluoreszenz-Faserlaserquelle |
| JPH02259732A (ja) * | 1989-03-31 | 1990-10-22 | Nippon Telegr & Teleph Corp <Ntt> | 非線形光方向性結合器 |
| JP2749643B2 (ja) * | 1989-07-07 | 1998-05-13 | 古河電気工業株式会社 | 光カップラ |
| JPH04506593A (ja) * | 1989-07-13 | 1992-11-12 | ブリテイッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー | 光通信ネットワーク |
| GB2236895A (en) * | 1989-07-13 | 1991-04-17 | British Telecomm | Optical communications system |
| US4963832A (en) * | 1989-08-08 | 1990-10-16 | At&T Bell Laboratories | Erbium-doped fiber amplifier coupling device |
| JPH0373934A (ja) * | 1989-08-15 | 1991-03-28 | Fujitsu Ltd | 光増幅器 |
| JP3062204B2 (ja) * | 1989-10-13 | 2000-07-10 | 三菱電線工業株式会社 | 光増幅器 |
| JPH03239231A (ja) * | 1990-02-16 | 1991-10-24 | Sumitomo Electric Ind Ltd | 光スイッチ |
| DE4010712A1 (de) * | 1990-04-03 | 1991-10-10 | Standard Elektrik Lorenz Ag | Optisches nachrichtenuebertragungssystem mit einem faseroptischen verstaerker |
| DE4014034A1 (de) * | 1990-05-02 | 1991-11-07 | Standard Elektrik Lorenz Ag | Optischer verstaerker |
| DE69115390T2 (de) * | 1990-09-04 | 1996-07-11 | At & T Corp | Optischer Sternkoppler mit der Verwendung von faseroptischer Verstärkungstechnik |
| FR2668868B1 (fr) * | 1990-11-05 | 1993-06-18 | Photonetics | Multiplexeur en longueur d'onde. |
| GB9025207D0 (en) * | 1990-11-20 | 1991-01-02 | British Telecomm | An optical network |
| JP2948656B2 (ja) * | 1990-11-29 | 1999-09-13 | 住友電気工業株式会社 | 活性元素添加光ファイバ部品の製造方法 |
| US5082343A (en) * | 1990-12-20 | 1992-01-21 | At&T Bell Laboratories | Isolated optical coupler |
| US5216728A (en) * | 1991-06-14 | 1993-06-01 | Corning Incorporated | Optical fiber amplifier with filter |
| US5757541A (en) * | 1997-01-15 | 1998-05-26 | Litton Systems, Inc. | Method and apparatus for an optical fiber amplifier |
| US5815309A (en) * | 1997-01-21 | 1998-09-29 | Molecular Optoelectronics Corporation | Optical amplifier and process for amplifying an optical signal propagating in a fiber optic |
| US7576909B2 (en) * | 1998-07-16 | 2009-08-18 | Imra America, Inc. | Multimode amplifier for amplifying single mode light |
| US7656578B2 (en) * | 1997-03-21 | 2010-02-02 | Imra America, Inc. | Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking |
| WO1999043121A2 (en) * | 1998-02-20 | 1999-08-26 | Molecular Optoelectronics Corporation | Communications link optical amplification and dispersion compensation |
| CA2299236A1 (en) | 1998-02-20 | 1999-08-26 | Brian L. Lawrence | Optical amplifier and process for amplifying an optical signal propagating in a fiber optic employing an overlay waveguide and stimulated emission |
| US6270604B1 (en) | 1998-07-23 | 2001-08-07 | Molecular Optoelectronics Corporation | Method for fabricating an optical waveguide |
| US6236793B1 (en) | 1998-09-23 | 2001-05-22 | Molecular Optoelectronics Corporation | Optical channel waveguide amplifier |
| US7106917B2 (en) | 1998-11-13 | 2006-09-12 | Xponent Photonics Inc | Resonant optical modulators |
| US6275512B1 (en) | 1998-11-25 | 2001-08-14 | Imra America, Inc. | Mode-locked multimode fiber laser pulse source |
| AU779320B2 (en) * | 1999-04-30 | 2005-01-13 | Spi Lasers Uk Limited | An optical fibre arrangement |
| US6208456B1 (en) | 1999-05-24 | 2001-03-27 | Molecular Optoelectronics Corporation | Compact optical amplifier with integrated optical waveguide and pump source |
| US7286241B2 (en) | 1999-06-24 | 2007-10-23 | Lockheed Martin Corporation | System and method for high-speed laser detection of ultrasound |
| US6483859B1 (en) | 1999-06-24 | 2002-11-19 | Lockheed Martin Corporation | System and method for high-speed laser detection of ultrasound |
| US20020085270A1 (en) * | 2000-11-27 | 2002-07-04 | Bendett Mark P. | Apparatus and method for integrated photonic devices having add/drop ports and gain |
| WO2002050575A2 (en) * | 2000-12-21 | 2002-06-27 | Cquint Communications Corporation | Resonant optical modulators |
| US7130111B2 (en) * | 2001-12-13 | 2006-10-31 | Intel Corporation | Optical amplifier with transverse pump |
| US6721087B2 (en) * | 2001-12-13 | 2004-04-13 | Intel Corporation | Optical amplifier with distributed evanescently-coupled pump |
| US6888668B2 (en) * | 2001-12-13 | 2005-05-03 | Intel Corporation | Optical amplifier with multiple wavelength pump |
| US6813405B1 (en) * | 2002-03-29 | 2004-11-02 | Teem Photonics | Compact apparatus and method for integrated photonic devices having folded directional couplers |
| US20030185514A1 (en) * | 2002-03-29 | 2003-10-02 | Bendett Mark P. | Method and apparatus for tapping a waveguide on a substrate |
| US7269190B2 (en) * | 2002-10-02 | 2007-09-11 | The Board Of Trustees Of The Leland Stanford Junior University | Er-doped superfluorescent fiber source with enhanced mean wavelength stability |
| US7944548B2 (en) * | 2006-03-07 | 2011-05-17 | Leica Geosystems Ag | Increasing measurement rate in time of flight measurement apparatuses |
| US7639347B2 (en) | 2007-02-14 | 2009-12-29 | Leica Geosystems Ag | High-speed laser ranging system including a fiber laser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1094639A (en) * | 1966-05-31 | 1967-12-13 | Standard Telephones Cables Ltd | A thin film surface wave mode dielectric waveguide |
| US3456211A (en) * | 1966-06-16 | 1969-07-15 | American Optical Corp | Fiber laser structures and the like |
| US3957341A (en) * | 1974-09-03 | 1976-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Passive frequency-selective optical coupler |
| JPS579041B2 (de) * | 1974-11-29 | 1982-02-19 | ||
| JPS5926006B2 (ja) * | 1977-01-22 | 1984-06-23 | 日本電信電話株式会社 | 光結合器の製造方法 |
| US4300811A (en) * | 1978-08-28 | 1981-11-17 | Rca Corporation | III-V Direct-bandgap semiconductor optical filter |
| JPS5576308A (en) * | 1978-12-05 | 1980-06-09 | Nippon Telegr & Teleph Corp <Ntt> | Optical period waveform branching filter |
| DE2853800A1 (de) * | 1978-12-13 | 1980-06-26 | Siemens Ag | Abtimmbarer richtkoppler fuer lichtwellenleiter |
| US4342499A (en) * | 1979-03-19 | 1982-08-03 | Hicks Jr John W | Communications tuning construction |
| US4315666A (en) * | 1979-03-19 | 1982-02-16 | Hicks Jr John W | Coupled communications fibers |
| DE2916234A1 (de) * | 1979-04-21 | 1980-10-30 | Philips Patentverwaltung | Kopplungsvorrichtung zum ein- bzw. auskoppeln von optischen signalen in eine bzw. aus einer uebertragungsglasfaser |
| US4243297A (en) * | 1979-06-27 | 1981-01-06 | International Communications And Energy, Inc. | Optical wavelength division multiplexer mixer-splitter |
| US4258336A (en) * | 1979-07-20 | 1981-03-24 | The United States Of America As Represented By The Secretary Of The Navy | Pulsed ring laser fiber gyro |
| US4301543A (en) * | 1980-02-20 | 1981-11-17 | General Dynamics Corporation, Pomona Division | Fiber optic transceiver and full duplex point-to-point data link |
| US4307933A (en) * | 1980-02-20 | 1981-12-29 | General Dynamics, Pomona Division | Optical fiber launch coupler |
| JPS56137328A (en) * | 1980-03-29 | 1981-10-27 | Nippon Telegr & Teleph Corp <Ntt> | Photofunctional device |
| US4493528A (en) * | 1980-04-11 | 1985-01-15 | Board Of Trustees Of The Leland Stanford Junior University | Fiber optic directional coupler |
| JPS56144416A (en) * | 1980-04-14 | 1981-11-10 | Nippon Telegr & Teleph Corp <Ntt> | Light signal amplifier |
| US4335933A (en) * | 1980-06-16 | 1982-06-22 | General Dynamics, Pomona Division | Fiber optic wavelength demultiplexer |
| US4343532A (en) * | 1980-06-16 | 1982-08-10 | General Dynamics, Pomona Division | Dual directional wavelength demultiplexer |
| JPS6037639B2 (ja) * | 1980-12-12 | 1985-08-27 | 日本電信電話株式会社 | 光信号増幅器 |
| US4383318A (en) * | 1980-12-15 | 1983-05-10 | Hughes Aircraft Company | Laser pumping system |
-
1982
- 1982-08-11 US US06/407,136 patent/US4515431A/en not_active Expired - Lifetime
-
1983
- 1983-07-26 AU AU17292/83A patent/AU555325B2/en not_active Ceased
- 1983-07-27 EP EP83304334A patent/EP0103382B1/de not_active Expired
- 1983-07-27 DE DE8383304334T patent/DE3380655D1/de not_active Expired
- 1983-07-27 AT AT83304334T patent/ATE46792T1/de not_active IP Right Cessation
- 1983-07-29 IL IL69372A patent/IL69372A/xx unknown
- 1983-08-08 JP JP58145595A patent/JPS5986023A/ja active Granted
- 1983-08-09 BR BR8304277A patent/BR8304277A/pt unknown
- 1983-08-10 KR KR8303730A patent/KR910004170B1/ko not_active Expired
- 1983-08-10 CA CA000434314A patent/CA1242605A/en not_active Expired
- 1983-08-10 NO NO832878A patent/NO832878L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IL69372A0 (en) | 1983-11-30 |
| JPH0377968B2 (de) | 1991-12-12 |
| BR8304277A (pt) | 1984-03-20 |
| AU555325B2 (en) | 1986-09-18 |
| JPS5986023A (ja) | 1984-05-18 |
| IL69372A (en) | 1987-01-30 |
| KR840006414A (ko) | 1984-11-29 |
| DE3380655D1 (en) | 1989-11-02 |
| NO832878L (no) | 1984-02-13 |
| EP0103382A2 (de) | 1984-03-21 |
| CA1242605A (en) | 1988-10-04 |
| US4515431A (en) | 1985-05-07 |
| AU1729283A (en) | 1984-02-16 |
| KR910004170B1 (en) | 1991-06-22 |
| EP0103382B1 (de) | 1989-09-27 |
| EP0103382A3 (en) | 1986-06-18 |
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