BE850854A - Dispositif amplificateur a reaction repartie supprimant la degenerescence des modes - Google Patents

Dispositif amplificateur a reaction repartie supprimant la degenerescence des modes

Info

Publication number
BE850854A
BE850854A BE174463A BE174463A BE850854A BE 850854 A BE850854 A BE 850854A BE 174463 A BE174463 A BE 174463A BE 174463 A BE174463 A BE 174463A BE 850854 A BE850854 A BE 850854A
Authority
BE
Belgium
Prior art keywords
degenerence
amplifier device
device suppressing
distributed reaction
reaction amplifier
Prior art date
Application number
BE174463A
Other languages
English (en)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of BE850854A publication Critical patent/BE850854A/fr

Links

Classifications

    • 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
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/0632—Thin film lasers in which light propagates in the plane of the thin film
    • H01S3/0635—Thin film lasers in which light propagates in the plane of the thin film provided with a periodic structure, e.g. using distributed feed-back, grating couplers
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/124—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers incorporating phase shifts

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Semiconductor Lasers (AREA)
  • Lasers (AREA)
  • Optical Integrated Circuits (AREA)
BE174463A 1976-02-02 1977-01-28 Dispositif amplificateur a reaction repartie supprimant la degenerescence des modes BE850854A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/654,339 US4096446A (en) 1976-02-02 1976-02-02 Distributed feedback devices with perturbations deviating from uniformity for removing mode degeneracy

Publications (1)

Publication Number Publication Date
BE850854A true BE850854A (fr) 1977-05-16

Family

ID=24624463

Family Applications (1)

Application Number Title Priority Date Filing Date
BE174463A BE850854A (fr) 1976-02-02 1977-01-28 Dispositif amplificateur a reaction repartie supprimant la degenerescence des modes

Country Status (10)

Country Link
US (1) US4096446A (fr)
JP (1) JPS5294794A (fr)
BE (1) BE850854A (fr)
CA (1) CA1073088A (fr)
DE (1) DE2703907C3 (fr)
FR (1) FR2339973A1 (fr)
GB (1) GB1566053A (fr)
IT (1) IT1072893B (fr)
NL (1) NL184086C (fr)
SE (1) SE413722B (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661783A (en) * 1981-03-18 1987-04-28 The United States Of America As Represented By The Secretary Of The Navy Free electron and cyclotron resonance distributed feedback lasers and masers
US4412719A (en) * 1981-04-10 1983-11-01 Environmental Research Institute Of Michigan Method and article having predetermined net reflectance characteristics
JPS60202974A (ja) * 1983-10-18 1985-10-14 Kokusai Denshin Denwa Co Ltd <Kdd> 分布帰還形半導体レ−ザ
JPH0666509B2 (ja) * 1983-12-14 1994-08-24 株式会社日立製作所 分布帰還型半導体レ−ザ装置
US4775980A (en) * 1983-12-14 1988-10-04 Hitachi, Ltd. Distributed-feedback semiconductor laser device
JPS6147685A (ja) * 1984-08-15 1986-03-08 Kokusai Denshin Denwa Co Ltd <Kdd> 分布帰還形半導体レ−ザ
JPS6189690A (ja) * 1984-10-09 1986-05-07 Fujitsu Ltd 半導体レ−ザ
US4777148A (en) * 1985-01-30 1988-10-11 Massachusetts Institute Of Technology Process for making a mesa GaInAsP/InP distributed feedback laser
US4722092A (en) * 1985-01-30 1988-01-26 Massachusetts Institute Of Technology GaInAsP/InP distributed feedback laser
US4687286A (en) * 1985-05-03 1987-08-18 Gte Laboratories Incorporated Methods of and apparatus for optical spatial scanning
JPS62144378A (ja) * 1985-12-18 1987-06-27 Sony Corp 分布帰還覆半導体レ−ザ−
US4740987A (en) * 1986-06-30 1988-04-26 American Telephone And Telegraph Company, At&T Bell Laboratories Distributed-feedback laser having enhanced mode selectivity
JP2700312B2 (ja) * 1987-01-07 1998-01-21 シャープ株式会社 分布帰還型半導体レーザ装置
JPS63244694A (ja) * 1987-03-30 1988-10-12 Sony Corp 分布帰還形半導体レ−ザ
DE3817326A1 (de) * 1988-05-20 1989-11-30 Siemens Ag Verfahren zur herstellung von gitterstrukturen mit um eine halbe gitterperiode gegeneinander versetzten abschnitten
US4908833A (en) * 1989-01-27 1990-03-13 American Telephone And Telegraph Company Distributed feedback laser for frequency modulated communication systems
US4905253A (en) * 1989-01-27 1990-02-27 American Telephone And Telegraph Company Distributed Bragg reflector laser for frequency modulated communication systems
GB8907304D0 (en) * 1989-03-31 1989-05-17 British Telecomm Distributed feedback lasers
FR2657967B1 (fr) * 1990-02-06 1992-05-22 Bertin & Cie Procede de realisation d'un reseau d'indice dans une fibre optique, et reseau de capteurs quasi-distribue forme dans cette fibre.
GB2280968B (en) * 1993-08-12 1996-07-31 Northern Telecom Ltd Chirped optical fibre filter
US6108469A (en) * 1998-11-30 2000-08-22 Lucent Technologies Inc Wavelength selective resonant gratings
US6826223B1 (en) 2003-05-28 2004-11-30 The United States Of America As Represented By The Secretary Of The Navy Surface-emitting photonic crystal distributed feedback laser systems and methods
WO2011127073A1 (fr) * 2010-04-05 2011-10-13 Georgia Tech Research Corporation Systèmes et procédés de surveillance de l'état des structures

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760292A (en) * 1970-12-22 1973-09-18 Bell Telephone Labor Inc Integrated feedback laser
US3795434A (en) * 1972-07-20 1974-03-05 Ibm Grating guides for optical surface waves
US3970959A (en) * 1973-04-30 1976-07-20 The Regents Of The University Of California Two dimensional distributed feedback devices and lasers
US3891302A (en) * 1973-09-28 1975-06-24 Western Electric Co Method of filtering modes in optical waveguides

Also Published As

Publication number Publication date
FR2339973A1 (fr) 1977-08-26
NL184086B (nl) 1988-11-01
NL7700858A (nl) 1977-08-04
IT1072893B (it) 1985-04-13
DE2703907C3 (de) 1981-06-11
JPS5294794A (en) 1977-08-09
DE2703907A1 (de) 1977-08-04
JPS5431358B2 (fr) 1979-10-06
FR2339973B1 (fr) 1980-02-08
SE7700646L (sv) 1977-08-03
GB1566053A (en) 1980-04-30
US4096446A (en) 1978-06-20
NL184086C (nl) 1989-04-03
DE2703907B2 (de) 1980-08-28
SE413722B (sv) 1980-06-16
CA1073088A (fr) 1980-03-04

Similar Documents

Publication Publication Date Title
BE850854A (fr) Dispositif amplificateur a reaction repartie supprimant la degenerescence des modes
FR2350110A1 (fr) Dispositif de catheterisme
BE859295A (fr) Dispositif electrochimique
FR2347199A1 (fr) Dispositif po
BE872107A (fr) Dispositif prehenseur
BE860579A (fr) Dispositif d&#39;amortissement
NL7714512A (nl) Versterkerinrichting.
FR2344178A1 (fr) Dispositif amplificateur a echelonnement de gain
DK226677A (da) Spendeband
JPS52119149A (en) Amplifying device
SE7802258L (sv) Katalytisk anordning
SE7713953L (sv) Anordning innehallande kornformiga katalysatorer
SE426787B (sv) Katalysatoranordning
BE876351A (fr) Dispositif tendeur
BE861272A (fr) Dispositif a semi-conducteurs
FR2347571A1 (fr) Dispositif de debrayage
BE858909A (fr) Dispositif a debosseler
NL7712715A (nl) Katalytisch reactieapparaat.
BE851586A (fr) Dispositif d&#39;amortissement
JPS52119150A (en) Amplifying device
NL184770C (nl) Katalytisch reactieapparaat.
IT1150088B (it) Amplificatore a reazione
BE854366A (fr) Dispositif de catheterisme
BE851486A (fr) Dispositif de raccordement
IT1076692B (it) Dispositivo per incannare

Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: WESTERN ELECTRIC CY INC.

Effective date: 19970128