Thomson-csf

Jacques Simon

Raymond Henry

Bernard Defaut

Philippe Morel

Jean-Victor Bouvet

Alain Chapard

Jean V Bouvet

Jean-Francois Carpenter

Jean F Carpentier

Daniele Levy

The invention concerns bidirectional optical fiber connections, and more particularly an optical coupling device between an emitting electroluminescent diode and a detecting photodiode, the optoelectronic component according to the invention comprising an electroluminescent diode called DEL sealed in a box of the transistor box type the cover of which carries a microlens centered on the optical axis of the box, while inside the box are integrated: a photodiode mounted at the side of the DEL and outside the optical axis, a semitransparent mirror and a mirror support, this support being machined so as to form a second mirror that reflects light to be detected towards the detecting diode; the novel component can be used in bidirectional optical connections, in computers and telephone exchange centers.

Bidirectional optoelectronic component operating as an optical coupling

A process allowing the centering of an optical fiber in an opto-electronic head or the fiber-holder of a head in an adapter between the head and optical cable. To this effect, a certain clearance is left between the cover of the head and the main part of the fiber-holder. Then a tool is used having micrometric screws for producing permanent deformations on the periphery of the cover made from a ductile alloy, while checking the result by 'dynamically' effected measurements. In the case of a fiber-holder in an adapter, a certain clearance is left between the end of the fiber-holder on the cable side and the adapter is provided with a skirt made from a ductile alloy which is deformed at certain points in a manner similar to that of the first case.

Process for aligning an optical fiber forming part of an optical

A method for fitting an optical fiber in an end fitting, the end fitting obtained constituting a connection device for connecting to another connecting device incorporating an optical fiber. A hollow cylindrical support whose lateral surface constitutes the reference surface for the position of the fiber is machined and the terminal portion of the fiber is coated with electrolytic gold deposit in the form of a frustum. Then the fiber is self-centered by force inserting the frustum and the terminal portion of the fiber which it covers in the hollow support. Levelling then occurs at the butting face of the fiber by sawing and/or grinding the projecting portions of both the frustum and fiber.

Method for fitting an optical fiber into an end fitting, the resulting

An opto-electronic coupling head which can either be an emission head coupling a light emitting diode to an optical fiber, or a reception head coupling an optical fiber to a photodiode. The head has a diode mounted on the base of a case for a semiconductor device and uses the cap of said case which has previously been stamped and perforated at the top. A fiber holder has a shoulder which abuts against the edges of the opening made in the cap and in conjunction with the electric welding of the cap to the base helps to fix the fiber holder in the case. The optical fiber is previously fixed by a deposit of solder in the axial opening of the fiber holder.

Opto-electronic coupling head and method for fitting such a head

An opto-electronic head serving as a connection between a photo-emitter or photo-detector component and a very small diameter optical transmission fibre, designed to facilitate the coupling and adjustment of the respective positions of the optical fibre and the component. To this end, the optical fibre is mounted in a fibre holder incorporating a relatively wide axial passage, except at a constriction point. The passage is flared in frustum-shaped manner on the diode surface side tangential to the fibre bulge maintaining said bulge at an optimum distance from said diode.

Opto-electronic head incorporating a very small diameter optical fibre

A method of optical coupling between an optical fiber and an optoelectronic component for an optical-fiber telecommunications link is applied to the fabrication of a transmitting and/or receiving optoelectronic head. In a semiconductor wafer having a p.sup.- layer and a p.sup.+ layer, chemical etching of the p.sup.- layer is followed by n-type doping of an n.sup.+ layer at the bottom of the cavity and on the edge of the cavity. Highly accurate positioning of the optical fiber is thus ensured as well as excellent coupling between the fiber and the light-emitting diode or photodiode thus provided.

Method of coupling between an optical fiber and an optoelectronic diode,

An opto-electronic coupling head ensuring the accurate positioning, in an hermetic device, of the endmost face of an optical fiber and of the active face of an opto-electronic component. With the fiber secured in the axial bore of a fiber-holder, a system of wedges provides a bearing plane for the support of an opto-electronic component. A plate serves as a base for a cover provided with sealed through-leads for the electrical connection of the component, and mechanically independent of the component and of the fiber.

Growing community of inventors

Paris, France

Jacques Simon