Patent ID: 9568683
Date: 2017-02-14
CPC Classifications: G02B

Claim:
1. An optical fiber connection structure comprising: a first optical fiber having a rear end surface on which a solid refractive index matching material formed of a light-transmitting polymer material is provided; a second optical fiber which is optically connected to the first optical fiber via the solid refractive index matching material of the first optical fiber; a clamp portion, which comprises a base member and a cover member which can be opened and closed with respect to the base member, and which is configured to hold and fix a rear end portion of the first optical fiber and a tip of the second optical fiber between the base member and the cover member; a liquid refractive index matching agent which is provided on a side of the base member of the clamp portion facing the cover member; and wherein the solid refractive index matching material functions as a cushion layer so that a portion between the tip of the second optical fiber on which irregularities are formed and the rear end surface of the first optical fiber can be embedded with the solid refractive index matching material, wherein the solid refractive index matching material is formed so that a thickness of the solid refractive index matching material at a core portion of the first optical fiber is a maximum thickness in the whole solid refractive index matching material covering the rear end surface of the first optical fiber, wherein the liquid refractive index matching material has a viscosity for stably maintaining an attachment state with respect to the base member without having fluidity with respect to the clamp portion regardless of a connection structure orientation, wherein the tip of the second optical fiber is disposed so as to come into contact with the solid refractive index matching material or be separated from the solid refractive index matching material, and wherein the entire solid refractive index matching material and the tip of the second optical fiber are both embedded in the liquid refractive index matching agent.