Optical fiber coupling part and manufacturing method thereof

Details Optical fiber coupling part and manufacturing method thereof Optical fiber coupling part and manufacturing method thereof

2005-02-01

2009-10-13

Font, Frank G (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C359S652000

Reexamination Certificate

active

07603008

ABSTRACT:
An optical fiber coupling part that reduces the difficulty in adjusting cores, minimizes coupling loss, and prevents optical characteristics from deteriorating. An optical fiber is fused to one end of a GRIN lens which includes a quartz glass containing one or more refractive index regulating substances selected from Sb2O3, Ta2O5, TiO2or ZrO2. Optical characteristics are not deteriorated because an adhesive is not used, and self-alignment effects facilitate adjustment of the cores of the GRIN lens and the optical fiber. Furthemore, coupling loss can be minimized by setting a refractive index distribution constant g of the GRIN lens within an appropriate range.

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