Coaxial laser weld through lid RF planarizing photonics package

A process for fabricating an optical fiber assembly for a photonics package comprising:

• securing a cylindrical, elongated ferrule coaxially around a jacketed optical fiber;
• exposing the distal end of the fiber;
• adjustably positioning the ferrule coaxially within a cylindrical flange;
• and
• securing the ferrule within the flange.

A photonics package including:

• a housing including spaced front and back walls;
• a photosensitive element mounted on said back wall within the housing;
• a fiber adjustment window through said front wall opposite said photosensitive element;
• a fiber optic assembly including an optical fiber and a cylindrical flange receiving said optical fiber, said flange being laterally adjustable and secured to said front wall to locate said optical fiber in said fiber adjustment window and to align an end portion of said optical fiber with said photosensitive element.