Patent ID: 11867957
Assignee: QUANDELA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for coupling an optical fiber (FOM) with a photonic device (PIL), said optical fiber (FOM) having one fiber end facing a sensitive surface (FA) of said photonic device (PIL), characterized in that said coupling being configured to be insensitive to temperature, and in that it comprises the successive steps of
A) providing said fiber end with an added microstructure (MS) arranged so as to provide support on a surrounding structure forming a support (SE) distinct from said photonic device (PIL) and to prevent any contact with said sensitive surface (FA) of said photonic device (PIL),
B) optimally aligning, at room temperature, in position and in angle, said fiber end with said sensitive surface (FA) by performing an active alignment, and
C) exerting on said microstructure (MS) and/or said optical fiber (FOM) a bearing pressure (P) against said surrounding structure forming a support (SE) so as to maintain a spacing distance (D) and an optimal alignment between said fiber end and said sensitive surface (FA) over a temperature range from an ambient temperature of 300K to a cryogenic operating temperature about 5K.