Optical waveguide part, its manufacturing method, connection member, optical part, method for connecting optical waveguide part, and optical element

A process for manufacturing an optical waveguide part, comprising:

• a first step of forming on a substrate a fixing groove for fixing an optical fiber and a first, second, . . . n-th (n is an integer of two or larger) optical waveguide grooves on a first, second, . . . n-th optical members, respectively;
• a second step of coating a resin on said first optical member or said substrate, bonding said first optical member to said substrate on a surface thereof with said first optical waveguide groove formed therein, and hardening said resin;
• a third step of additionally forming another optical element on an end surface of said first optical member;
• and
• a fourth step of coating a resin on said second optical member or said substrate, bonding said second optical member to said substrate on a surface thereof with said second optical waveguide groove formed therein in a manner such that said first and second optical waveguide grooves are connected together, and hardening said resin,
• wherein said third and fourth steps are also carried out on said third, . . . n-th optical members, respectively.

A process for manufacturing an optical waveguide part, comprising:

• a first step of forming on a substrate a fixing groove for fixing an optical fiber and a first, second, . . . n-th (n is an integer of two or larger) optical waveguide grooves on a first, second, . . . n-th optical members, respectively;
• a second step of directly joining said first optical member to said substrate on a surface thereof with said first optical waveguide groove formed therein;
• a third step of filling said first optical waveguide groove with a core material;
• a fourth step of additionally forming an optical element on an end surface of said first optical member;
• a fifth step of directly joining said second optical member to said substrate on a surface thereof with said second optical waveguide groove formed therein in a manner such that said first and second optical waveguide grooves are connected together;
• and
• a sixth step of filling said second optical waveguide groove with a core material,
• wherein said fourth to sixth steps are also carried out on said third, . . . n-th optical members, respectively.