FR2552555A2 - Switching device for optical fibres - Google Patents

Switching device for optical fibres Download PDF

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Publication number
FR2552555A2
FR2552555A2 FR8315125A FR8315125A FR2552555A2 FR 2552555 A2 FR2552555 A2 FR 2552555A2 FR 8315125 A FR8315125 A FR 8315125A FR 8315125 A FR8315125 A FR 8315125A FR 2552555 A2 FR2552555 A2 FR 2552555A2
Authority
FR
France
Prior art keywords
paraboloid
switching device
optical fibres
face
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.)
Pending
Application number
FR8315125A
Other languages
French (fr)
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.)
SEFTIM SA
Original Assignee
SEFTIM SA
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
Priority claimed from FR8217191A external-priority patent/FR2534699A1/en
Application filed by SEFTIM SA filed Critical SEFTIM SA
Priority to FR8315125A priority Critical patent/FR2552555A2/en
Publication of FR2552555A2 publication Critical patent/FR2552555A2/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems
    • 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
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • 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
    • G02B6/2817—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 reflective elements to split or combine optical signals

Abstract

The subject of the present addition is an improvement to the device of the main patent so as to preserve all the advantages of the system and to increase the yield thereof. In order to achieve this, a paraboloid is used which is transparent and reflecting in its non-axial portion and this paraboloid is terminated by a polished and treated plane face, perpendicular to the axis.

Description

Dans le brevet 82/17191, on revendiquait l'utilisation d'un paraboloade réalise en matière transparente (verre ou plastique) réfléchissant, sur la face parabolique pour, par différentes combinaisons, assurer - la jonction de deux fibres optiques identiques ou differentes, - la séparation, ou la réunion, du signal véhicule nar une fibre optique
en 2, 3, 4, etc ... signaux dans une proportion choisie à l'avance, - le filtrage en longueur d'ondes en permettant aux filtres, interférentiels
ou a absorption de travailler en rayonnement normal, - un parfait achromatisme a toutes ces fréquences
Toutefois, les dispositifs préconisés, dans le brevet 82/17191 avaient, en commun, l'utilisation d'une parabolode suivant son axe de révolution, d'où un mauvais rendement du à des occultations mécaniques.In patent 82/17191, we claimed the use of a paraboloade made of transparent material (glass or plastic) reflecting on the parabolic surface to, by different combinations, ensure - the junction of two identical or different optical fibers, - the separation, or the union, of the vehicle signal nar an optical fiber
in 2, 3, 4, etc ... signals in a proportion chosen in advance, - wavelength filtering by allowing filters, interference
or absorption to work in normal radiation, - perfect achromatism at all these frequencies
However, the devices recommended in patent 82/17191 had, in common, the use of a parabolode along its axis of revolution, hence poor performance due to mechanical occultations.

Le présent additif est relatif à un dispositif permettant de supprimer cet inconvénient.This additive relates to a device making it possible to eliminate this drawback.

On comprendra mieux, un exemple de réalisation du constituant de base, en se reportant à la figure 1. Dans celle-ci (1) désigne le parabololde réalisé dans une matière transparente a toutes les longueurs d'ondes utilisées, (2) est la face réfléchissante et sa protectionieventuel.le, (3) est la face avant, plane, polie et traitée, (4) est une portion du parabo lu'ide supprimé avant usinage et traitement de la face 5, (6) est la fibre optique dont l'extrémité centrale est sur la face 5 au foyer du parabolo7de, (7) et (8) désignent les rayons extrêmes, (9) represente la surface traversee par l'énergie sur le plan 3.It will be better understood, an example of embodiment of the basic constituent, with reference to FIG. 1. In the latter (1) denotes the paraboloid made of a transparent material at all the wavelengths used, (2) is the reflective face and its possible protection. The, (3) is the front face, flat, polished and treated, (4) is a portion of the paraboloid removed before machining and treatment of the face 5, (6) is the optical fiber whose central end is on the face 5 at the focal point of the paraboloid, (7) and (8) denote the extreme rays, (9) represents the surface crossed by the energy on the plane 3.

On a représente, de même, à la figure 2, une vue en plan de l'assemblage de 3 dispositifs identiques permettant la séparation d'un signal optique en deux signaux identiques : (1) représente un parabololde et sa fibre optique (6) comme à la figure 1 B. Deux ensembles identiques sont placés côte à cote (faces (12) et (13) ) reposant par leurs faces planes sur la face (3) de (1).We have also shown in Figure 2, a plan view of the assembly of 3 identical devices allowing the separation of an optical signal into two identical signals: (1) represents a paraboloid and its optical fiber (6) as in Figure 1 B. Two identical sets are placed side by side (faces (12) and (13)) resting by their planar faces on the face (3) of (1).

Le parabololde (10) renvoie donc la moitié du flux énergétique du faisceau (9) dans la fibre (14). De même, le paraboloide (11) capte l'autre moitié pour la concentrer dans (15).The paraboloid (10) therefore returns half of the energy flow from the beam (9) into the fiber (14). Similarly, the dish (11) captures the other half to concentrate it in (15).

Bien entendu, de meme que l'on a amputé (1) de la partie (4), on peut alléger (10) et (11) des portions inutiles. Of course, just as we have amputated (1) from part (4), we can reduce (10) and (11) unnecessary portions.

Claims (2)

REVENDICATIONS 1. Dispositif optique constitué par une piece optique comprenant un, ou plusieurs, paraboloides de revolution, caractérisés par le fait qu'une, ou plusieurs, fibres optiques sont centrées sur leur foyer.1. Optical device consisting of an optical part comprising one, or more, paraboloids of revolution, characterized in that one, or more, optical fibers are centered on their focus. 2. Utilisation d'une portion de parabololde, hors de l'axe. 2. Use of a portion of parabolold, off the axis.
FR8315125A 1982-10-14 1983-09-23 Switching device for optical fibres Pending FR2552555A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8315125A FR2552555A2 (en) 1982-10-14 1983-09-23 Switching device for optical fibres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8217191A FR2534699A1 (en) 1982-10-14 1982-10-14 Switching device for optical fibres.
FR8315125A FR2552555A2 (en) 1982-10-14 1983-09-23 Switching device for optical fibres

Publications (1)

Publication Number Publication Date
FR2552555A2 true FR2552555A2 (en) 1985-03-29

Family

ID=26223108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8315125A Pending FR2552555A2 (en) 1982-10-14 1983-09-23 Switching device for optical fibres

Country Status (1)

Country Link
FR (1) FR2552555A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2341874A1 (en) * 1976-02-19 1977-09-16 Cselt Centro Studi Lab Telecom OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS ON MULTIMODES OPTICAL GUIDES
EP0040705A1 (en) * 1980-05-24 1981-12-02 Ibm Deutschland Gmbh Coupling element for optical wave guides

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2341874A1 (en) * 1976-02-19 1977-09-16 Cselt Centro Studi Lab Telecom OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS ON MULTIMODES OPTICAL GUIDES
EP0040705A1 (en) * 1980-05-24 1981-12-02 Ibm Deutschland Gmbh Coupling element for optical wave guides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 3, août 1980, page 978, New York, US; F.J.BEALLE: "Parabolic coupler for fibre optics" *

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