Method of coupling optical parts and refractive index imaging material
AssigneeFujitsu Limited
InventorsKoji Tsukamoto, Takeshi Ishitsuka, Tetsuzo Yoshimura, Katsusada Motoyoshi, Yasuhiro Yoneda
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Abstract
A method of coupling optical parts including bonding the optical coupling faces of two optical waveguides by butting and fusing them. Also, a method for forming a refractive-index distribution having the focusing lens effect by setting the interval between the optical coupling faces of two optical parts to 0.1 mm or more, feeding a refractive-index imaging material also serving as an adhesive into the gap between the faces, and applying light to the refractive-index imaging material from the optical coupling face of at least one of the optical parts.
Claims2
A refractive-index imaging material produced by the following method:
- forming a mixture by dissolving, in a solvent, a first ethylene unsaturated compound whose general expression is R.sub.1 CH--CHCOOR.sub.2 in which R.sub.1 is any one of CH.sub.3 and H, and R.sub.2 is a chain or alicyclic compound group with 1 to 4 carbon atoms, a second ethylene unsaturated compound containing silicone, and a thermopolymerization initiator;
- heating and agitating the mixture to form a copolymer solution;
- cooling the copolymer solution to a room temperature;
- and
- adding to the cooled copolymer solution, a third ethylene unsaturated compound containing an aromatic ring or halogen, a multifunctional acrylate or a multifunctional methacrylate, and a photopolymerization initiator.
Dependencies are inferred from the claim text.