DE3932579A1 - Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input - Google Patents

Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input

Info

Publication number
DE3932579A1
DE3932579A1 DE19893932579 DE3932579A DE3932579A1 DE 3932579 A1 DE3932579 A1 DE 3932579A1 DE 19893932579 DE19893932579 DE 19893932579 DE 3932579 A DE3932579 A DE 3932579A DE 3932579 A1 DE3932579 A1 DE 3932579A1
Authority
DE
Germany
Prior art keywords
laser
lens
socket
sleeve
optical
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.)
Withdrawn
Application number
DE19893932579
Other languages
German (de)
Inventor
Heiner Dipl Ing Hauer
Helmut Reppe
Eberhard Moess
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to DE19893932579 priority Critical patent/DE3932579A1/en
Publication of DE3932579A1 publication Critical patent/DE3932579A1/en
Withdrawn legal-status Critical Current

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
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub

Abstract

The coupling has a laser-diode (1a) housed behind a window (1b) focussed through a spherical lens (2) on to a lightguide contained in the centre of a coaxial connector (8). The diode housing is laser-welded to the connector outer (7) through an adapter (5) with a threaded extension and a locknut (6a) forming an integral sealed unit. The lightguide endface is cut at an angle to minimise on-axis reflection to the light-source. The coaxial connector conforms to international standards for optical couplings. USE - Versatile laser-diode coupling in optical fibre communication systems.

Description

Die Erfindung betrifft ein optisches Sendemodul für die optische Nachrichtentechnik. Unter einem optischen Sendemodul wird eine Baugruppe verstanden, welche ein elektrisches Signal in ein Lichtsignal in der Form eines entsprechend modulierten Lichtstrahls wandelt und diesen Lichtstrahl in einen Lichtwellenleiter einkoppelt.The invention relates to an optical transmitter module for the optical communications technology. Under an optical Transmitter module is understood to be an assembly which electrical signal into a light signal in the form of a correspondingly modulated light beam and converts it Coupled light beam into an optical fiber.

Die Erfindung wird an Hand einer Figur beschrieben. In dieser Figur ist das erfindungsgemäße optische Sendemodul dargestellt.The invention is described with the aid of a figure. In this figure is the optical transmitter module according to the invention shown.

Es bedeuten:It means:

 1: ein Gehäuse
 1a: eine Laserdiode
 1b: ein Fenster
 2: eine Kugellinse
 3: ein Kugelhalter
 4: eine erste Buchse
 5: eine zweite Buchse
 6: eine Hülse
 6a: ein Bund
 7: eine Überwurfmutter
 7a: ein Innengewinde
 8: ein Steckerstift
 9: ein Lichtwellenleiter
10: eine erste Schweißnaht
11: eine zweite Schweißnaht 1 : a housing
1 a: a laser diode
1 b: a window
2 : a spherical lens
3 : a ball holder
4 : a first socket
5 : a second socket
6 : a sleeve
6 a: a bundle
7 : a union nut
7 a: an internal thread
8 : a connector pin
9 : an optical fiber
10 : a first weld
11 : a second weld

Das Gehäuse 1 ist vorzugsweise als hermetisch dichtes Gehäuse ausgebildet, enthält die Laserdiode 1a und weist das Fenster 1b auf. Die Kugellinse 2 ist im Kugelhalter 3 gehaltert. Statt der Kugellinse kann auch eine Stablinse verwendet werden. Das Gehäuse 1 und der Kugelhalter 3 sind in der ersten Buchse 4 gehaltert, wobei das Fenster 1b der Kugellinse 2 zugewandt ist. Die erste Buchse 4 befindet sich in der zweiten Buchse 5, wobei diese beiden Buchsen durch die erste Schweißnaht 10 miteinander verbunden sind und einen Laserdiodenhalter bilden.The housing 1 is preferably designed as a hermetically sealed housing, contains the laser diode 1 a and has the window 1 b. The ball lens 2 is held in the ball holder 3 . A rod lens can also be used instead of the ball lens. The housing 1 and the ball holder 3 are held in the first socket 4 , the window 1 b facing the ball lens 2 . The first socket 4 is located in the second socket 5 , these two sockets being connected to one another by the first weld 10 and forming a laser diode holder.

An eine von der Laserdiode 1a abgewandten Stirnfläche der zweiten Buchse 5 ist durch die zweite Schweißnaht 11 die Hülse 6 mit einer ihrer Stirnflächen angebracht. Um die Hülse 6 herum ist die Überwurfmutter 7 drehbar gelagert und durch den Bund 6a gesichert. Die erste Schweißnaht 10 und die zweite Schweißnaht 11 werden vorzugsweise durch ein Laserschweißverfahren hergestellt und bilden je eine stoffschlüssige Verbindung.On one end face of the second socket 5 facing away from the laser diode 1 a, the sleeve 6 is attached with one of its end faces by the second weld seam 11 . Around the sleeve 6 , the union nut 7 is rotatably supported and secured by the collar 6 a. The first weld 10 and the second weld 11 are preferably produced by a laser welding process and each form a material connection.

In der Hülse 6 befindet sich in axialer Richtung der Steckerstift 8, in welchem der Lichtwellenleiter 9 mit einem gängigen Verfahren konzentrisch befestigt ist. Die der Kugellinse 2 und damit der Laserdiode 1a zugewandte Stirnfläche des Steckerstiftes 8 einschließlich des Lichtwellenleiters 9 ist unter einem Winkel von vorzugsweise 5° bis 20° schräg angeschliffen und mit einer optischen Antireflexionsschicht beschichtet. Der Steckerstift 8 mit dem Lichtwellenleiter 9 ist ein mechanisch stabiles Teil, so daß das schräge Anschleifen und Beschichten einfach und daher kostengünstig vorgenommen werden kann.In the sleeve 6 there is the plug pin 8 in the axial direction, in which the optical waveguide 9 is fixed concentrically by a common method. The end face of the plug pin 8, including the optical waveguide 9 , facing the ball lens 2 and thus the laser diode 1 a is beveled at an angle of preferably 5 ° to 20 ° and coated with an optical anti-reflection layer. The plug pin 8 with the optical fiber 9 is a mechanically stable part, so that the oblique grinding and coating can be carried out easily and therefore inexpensively.

Der Steckerstift 8 ragt um das Maß a, die Stecklänge, aus der von der Laserdiode 1a abgewandten Stirnfläche der Hülse 6 heraus. Diese Stecklänge, der Steckerstift 8, die Hülse 6 und die Überwurfmutter 7 bilden einen optischen Stecker und sind so ausgebildet, daß sie in einen der international genormten optischen Gegenstecker passen. Die hier nicht dargestellte Lichtwellenleiter-Übertragungsstrecke ist mit diesem optischen Gegenstecker versehen. So wird erreicht, daß sich das erfindungsgemäße optische Sendemodul bequem mit der Lichtwellenleiter-Übertragungsstrecke kuppeln läßt.The connector pin 8 protrudes by the dimension a, the plug-in length, from the end face of the sleeve 6 facing away from the laser diode 1 a. This insertion length, the connector pin 8 , the sleeve 6 and the union nut 7 form an optical connector and are designed so that they fit into one of the internationally standardized optical mating connectors. The optical fiber transmission path, not shown here, is provided with this optical mating connector. It is thus achieved that the optical transmitter module according to the invention can be easily coupled to the optical fiber transmission link.

Claims (1)

Optisches Sendemodul mit folgenden Merkmalen:
  • a) Das optische Sendemodul weist ein Gehäuse (1) mit einer Laserdiode (1a) und einem Fenster (1b) , eine Linse (2), eine erste Buchse (4), eine zweite Buchse (5), eine Hülse (6), eine Überwurfmutter (7), einen Steckerstift (8) und einen Lichtwellenleiter (9) auf.
  • b) Das Gehäuse (1) und die Linse (2) befinden sich in der ersten Buchse (4), wobei das Fenster (1b) der Linse (2) zugewandt ist.
  • c) Die erste Buchse (4) befindet sich in der zweiten Buchse (5), wobei beide Buchsen durch eine erste stoffschlüssige Verbindung (10) miteinander verbunden sind.
  • d) An eine von der Laserdiode (1a) abgewandten Stirnfläche der zweiten Buchse (5) ist durch eine zweite stoffschlüssige Verbindung (11) die Hülse (6) mit einer ihrer Stirnflächen angebracht.
  • e) In der Hülse (6) befindet sich in axialer Richtung der Steckerstift (8), in welchem der Lichtwellenleiter (9) konzentrisch befestigt ist.
  • f) Der Steckerstift ragt um die Stecklänge (a) aus der von der Laserdiode (1a) abgewandten Stirnfläche der Hülse (6) heraus.
  • g) Die Stecklänge (a), der Steckerstift (8), die Hülse (6) und die Überwurfmutter (7) sind so gestaltet, daß sie einen optischen Stecker bilden.
Optical transmitter module with the following features:
  • a) The optical transmitter module has a housing ( 1 ) with a laser diode ( 1 a) and a window ( 1 b), a lens ( 2 ), a first socket ( 4 ), a second socket ( 5 ), a sleeve ( 6 ), a union nut ( 7 ), a connector pin ( 8 ) and an optical fiber ( 9 ).
  • b) The housing ( 1 ) and the lens ( 2 ) are located in the first socket ( 4 ), the window ( 1 b) facing the lens ( 2 ).
  • c) The first socket ( 4 ) is located in the second socket ( 5 ), both sockets being connected to one another by a first integral connection ( 10 ).
  • d) The sleeve ( 6 ) with one of its end faces is attached to an end face of the second socket ( 5 ) facing away from the laser diode ( 1 a) by means of a second integral connection ( 11 ).
  • e) In the sleeve ( 6 ) there is the plug pin ( 8 ) in the axial direction, in which the optical waveguide ( 9 ) is fixed concentrically.
  • f) The plug pin protrudes by the plug-in length (a) from the end face of the sleeve ( 6 ) facing away from the laser diode ( 1 a).
  • g) The plug-in length (a), the plug pin ( 8 ), the sleeve ( 6 ) and the union nut ( 7 ) are designed so that they form an optical plug.
DE19893932579 1989-09-29 1989-09-29 Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input Withdrawn DE3932579A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893932579 DE3932579A1 (en) 1989-09-29 1989-09-29 Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893932579 DE3932579A1 (en) 1989-09-29 1989-09-29 Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input

Publications (1)

Publication Number Publication Date
DE3932579A1 true DE3932579A1 (en) 1991-04-25

Family

ID=6390506

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893932579 Withdrawn DE3932579A1 (en) 1989-09-29 1989-09-29 Laser-diode coupling for standard optical fibre link - uses sealed coaxial housing with lens and anti-reflection input

Country Status (1)

Country Link
DE (1) DE3932579A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563725A1 (en) * 1992-03-30 1993-10-06 Bodenseewerk Gerätetechnik GmbH Photo-diode connexion with light waveguide
DE19502985A1 (en) * 1995-01-31 1996-08-01 Deutsche Telekom Ag Plug connector for optical components, e.g. LEDs, laser diodes and photodiodes,
DE19548502A1 (en) * 1995-12-22 1997-06-26 Amp Gmbh Fixing and positioning apparatus for sheathed optical fibre
DE19704341A1 (en) * 1996-02-05 1997-08-07 Alps Electric Co Ltd Light emitting module
DE10001875A1 (en) * 2000-01-18 2001-08-02 Infineon Technologies Ag Optical transmitter / receiver module with internal optical fiber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727177A1 (en) * 1976-06-21 1977-12-29 Philips Nv CONNECTOR FOR COUPLING OPTICAL FIBERS WITH A LIGHT SPOTTER OR LIGHT RECEIVER
DE2922949C2 (en) * 1978-06-06 1985-09-19 Nippon Electric Co., Ltd., Tokio/Tokyo Device for connecting at least one light-emitting diode to an optical light guide
DE3413749A1 (en) * 1984-04-12 1985-10-17 Telefunken electronic GmbH, 7100 Heilbronn Optical system
DE3705408C1 (en) * 1987-02-20 1988-08-11 Ant Nachrichtentech Device for optically coupling an element which emits light to an element which receives light
EP0278502A2 (en) * 1987-02-13 1988-08-17 E.I. Du Pont De Nemours And Company Inorganic metal salt as adjuvant for negative liquid electrostatic developers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727177A1 (en) * 1976-06-21 1977-12-29 Philips Nv CONNECTOR FOR COUPLING OPTICAL FIBERS WITH A LIGHT SPOTTER OR LIGHT RECEIVER
DE2922949C2 (en) * 1978-06-06 1985-09-19 Nippon Electric Co., Ltd., Tokio/Tokyo Device for connecting at least one light-emitting diode to an optical light guide
DE3413749A1 (en) * 1984-04-12 1985-10-17 Telefunken electronic GmbH, 7100 Heilbronn Optical system
EP0278502A2 (en) * 1987-02-13 1988-08-17 E.I. Du Pont De Nemours And Company Inorganic metal salt as adjuvant for negative liquid electrostatic developers
DE3705408C1 (en) * 1987-02-20 1988-08-11 Ant Nachrichtentech Device for optically coupling an element which emits light to an element which receives light

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563725A1 (en) * 1992-03-30 1993-10-06 Bodenseewerk Gerätetechnik GmbH Photo-diode connexion with light waveguide
DE4210331A1 (en) * 1992-03-30 1993-10-07 Bodenseewerk Geraetetech Connection of a photodiode to an optical fiber
DE19502985A1 (en) * 1995-01-31 1996-08-01 Deutsche Telekom Ag Plug connector for optical components, e.g. LEDs, laser diodes and photodiodes,
DE19548502A1 (en) * 1995-12-22 1997-06-26 Amp Gmbh Fixing and positioning apparatus for sheathed optical fibre
DE19704341A1 (en) * 1996-02-05 1997-08-07 Alps Electric Co Ltd Light emitting module
FR2744532A1 (en) * 1996-02-05 1997-08-08 Alps Electric Co Ltd LIGHT EMITTING MODULE
DE19704341C2 (en) * 1996-02-05 1999-12-16 Alps Electric Co Ltd Light emitting module
DE10001875A1 (en) * 2000-01-18 2001-08-02 Infineon Technologies Ag Optical transmitter / receiver module with internal optical fiber
DE10001875C2 (en) * 2000-01-18 2002-01-24 Infineon Technologies Ag Optical transmitter / receiver module with internal optical fiber
US6572280B2 (en) 2000-01-18 2003-06-03 Infineon Technologies Ag Optical transmitting/receiving module including an internal optical waveguide

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