METHOD FOR MODIFYING THE REFLECTIVE COEFFICIENT OF THE END OF A MONOMODE OPTICAL FIBER AND OPTICAL FIBER INTERFEROMETER MADE THEREBY

摘要

THE INVENTION RELATES TO THE TREATMENT OF THE ENDS OF A SINGLE-MODE OPTICAL FIBER IN ORDER TO GIVE THEM FOR EXAMPLE A COEFFICIENT OF REFLECTION SUFFICIENT TO CONSTITUTE A FABRY-PEROT INTERFEROMETER. AN EVENTUALLY INCLINED FLAT FACE IS OBTAINED BY CLIVING. A BRIEF HEATING DEFORMS THIS FACE AND SHOWS A CONVEX DOME 5 WHICH OCCUPIES THE CENTRAL ZONE OF THE DEFORMED FACE 7, AND WHICH, WITH REGARD TO THE HEART 20, SHOWS ONLY A SMALL RESIDUAL INCLINATION. DIELECTRIC LAYERS SUCH AS 32 ARE THEN DEPOSITED DIRECTLY ON THIS FACE TO FORM A REFLECTIVE COATING. /P P THE INVENTION APPLIES FOR EXAMPLE TO THE FREQUENCY CONTROL OF A USABLE SEMICONDUCTOR LASER IN TELECOMMUNICATIONS.