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AssigneeThomson-CSF
InventorsGeorges Dubroeucq, Frantz Martin, Michel Georgeot, Thierry Chamfrault
Estimating the term…
The invention provides a method and apparatus for aligning an optical fiber and a semiconductor laser. The positions of the laser and of the fiber are located with respect to a fixed reference system, which is an optical detector which identifies the transverse light emission of the laser. With the laser position, the fiber is advanced so that it "flies over" the laser: the fiber then modulates the light received by the detector of the reference system. The fiber is moved back by a known amount and is moved by scanning in the plane transversal to the emissive axis of the laser, until a second optical detector, placed at the other end of the fiber, receives a maximum of light transmitted by the fiber.
A method for reciprocally positioning an optical fiber and a semiconductor laser, the wafer of the laser being mounted in a case without cover and the fiber substantially parallel to the emissive axis of the laser, being introduced into the case through one of its walls, in which process the laser and the fiber are located with respect to a fixed reference system formed by the optical axis common to an image forming optical device and to a differential optical detector which picks up the energy radiated by the laser in a direction perpendicular to the emission axis of the laser.
Dependencies are inferred from the claim text.