ITMI931976A1 - Generatore di impulsi ottici - Google Patents

Generatore di impulsi ottici

Info

Publication number
ITMI931976A1
ITMI931976A1 IT93MI001976A ITMI931976A ITMI931976A1 IT MI931976 A1 ITMI931976 A1 IT MI931976A1 IT 93MI001976 A IT93MI001976 A IT 93MI001976A IT MI931976 A ITMI931976 A IT MI931976A IT MI931976 A1 ITMI931976 A1 IT MI931976A1
Authority
IT
Italy
Prior art keywords
optical fiber
optical
lens
signal
pulse generator
Prior art date
Application number
IT93MI001976A
Other languages
English (en)
Inventor
Masaaki Foruhashi
Ryoji Handa
Original Assignee
Ando Electric
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 Ando Electric filed Critical Ando Electric
Publication of ITMI931976A0 publication Critical patent/ITMI931976A0/it
Publication of ITMI931976A1 publication Critical patent/ITMI931976A1/it
Application granted granted Critical
Publication of IT1272620B publication Critical patent/IT1272620B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0003—Details
    • 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
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides
    • G02B6/3504—Rotating, tilting or pivoting the waveguides, or with the waveguides describing a curved path
    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
    • G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
    • G02B6/3548—1xN switch, i.e. one input and a selectable single output of N possible outputs
    • G02B6/3552—1x1 switch, e.g. on/off switch
    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
    • G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
    • G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
    • G02B6/3578—Piezoelectric force
    • 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
    • H01S2301/00—Functional characteristics
    • H01S2301/08—Generation of pulses with special temporal shape or frequency spectrum

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)

Abstract

Un generatore di impulsi ottici comprende una sorgente di segnali. (1), una sorgente luminosa d'eccitazione (2), una prima fibra ottica (1A) una prima lente (8F), un reticolo di diffrazione (10), una seconda lente (8E), una seconda fibra ottica (3) e un commutatore ottico (4). I fasci di segnali prodotti dalla sorgente di segnali vengono trasmessi attraverso la prima fibra ottica, la prima lente, il reticolo di diffrazione e la seconda lente alternativamente, così da emettere selettivamente un fascio di segnali di lunghezza d'onda desiderata. Questo fascio di segnali viene fatto convergere ed è incidente su una parte terminale della seconda fibra ottica che viene eccitata da un fascio d'eccitazione prodotto dalla sorgente luminosa. Al funzionamento del commutatore ottico, la parte terminale della seconda fibra ottica viene fatta vibrare, risultando nella periodica apertura e chiusura di un cammino ottico formato tra la prima e la seconda fibra ottica. Pertanto, un impulso ottico di ampiezza e durata controllate viene emesso dalla seconda fibra ottica. Preferibilmente, la seconda fibra ottica é costituita da un materiale predeterminato che include un materiale delle terre rare.
ITMI931976A 1992-09-14 1993-09-14 Generatore di impulsi ottici IT1272620B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4270893A JPH0697886A (ja) 1992-09-14 1992-09-14 変位素子を光スイッチとする波長可変光パルス発生器

Publications (3)

Publication Number Publication Date
ITMI931976A0 ITMI931976A0 (it) 1993-09-14
ITMI931976A1 true ITMI931976A1 (it) 1995-03-14
IT1272620B IT1272620B (it) 1997-06-26

Family

ID=17492442

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI931976A IT1272620B (it) 1992-09-14 1993-09-14 Generatore di impulsi ottici

Country Status (5)

Country Link
US (1) US5315677A (it)
JP (1) JPH0697886A (it)
DE (1) DE4331204C2 (it)
FR (1) FR2695735B1 (it)
IT (1) IT1272620B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2477914C2 (ru) * 2011-03-24 2013-03-20 Государственное образовательное учреждение высшего профессионального образования "Российский университет дружбы народов" (РУДН) Модулятор лазерного излучения

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2331900A1 (fr) * 1975-11-13 1977-06-10 Commissariat Energie Atomique Dispositif interrupteur selectif en longueur d'onde
US4152575A (en) * 1978-06-12 1979-05-01 United Technologies Corporation Method of material processing utilizing an interrupted beam of continuous wave laser radiation
JPS55116227A (en) * 1979-03-02 1980-09-06 Nec Corp Light chopper
US4497535A (en) * 1982-03-19 1985-02-05 Gte Laboratories Incorporated Optical pulse generator
US4741587A (en) * 1986-02-20 1988-05-03 American Telephone And Telegraph Company, At&T Bell Laboratories Optical communications system and method for the generation of a sequence of optical pulses by means of induced modulational instability
US4768853A (en) * 1986-08-08 1988-09-06 Corning Glass Works Optical fiber dispersion transformer
GB2246234A (en) * 1990-05-21 1992-01-22 Univ Southampton Optical amplifier with shaped spectral gain
JPH0777279B2 (ja) * 1990-07-27 1995-08-16 パイオニア株式会社 光パルス発生装置
GB2265751B (en) * 1992-03-23 1995-12-20 Univ Southampton Optical amplifier with automatic self adjusting gain spectrum
US5311525A (en) * 1992-03-31 1994-05-10 The Board Of Trustees Of The Leland Stanford University Nonlinear optical coupler using a doped optical waveguide

Also Published As

Publication number Publication date
FR2695735A1 (fr) 1994-03-18
ITMI931976A0 (it) 1993-09-14
FR2695735B1 (fr) 1995-09-29
IT1272620B (it) 1997-06-26
US5315677A (en) 1994-05-24
DE4331204A1 (de) 1994-03-17
JPH0697886A (ja) 1994-04-08
DE4331204C2 (de) 1996-03-07

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970926