Optical transmission channel board, board with built-in optical transmission channel, and data processing apparatus

Abstract

A fabrication method for an optical transmission channel board includes a first step of forming on a substrate a layer containing an electrically conductive material, and a second step of patterning said layer containing an electrically conductive material formed on said substrate, and thereby forming circuit patterns at least a part of which is used as an electric circuit and at least a part of which positionally regulates an optical transmission channel.

1 . A fabrication method for an optical transmission channel board comprising: 
 a first step of forming on a substrate a layer containing an electrically conductive material; and    a second step of patterning said layer containing an electrically conductive material formed on said substrate, and thereby forming circuit patterns at least a part of which is used as an electric circuit and at least a part of which positionally regulates an optical transmission channel.    
   
   
       2 . The fabrication method for an optical transmission channel board according to  claim 1 , wherein said circuit pattern which positionally regulates said optical transmission channel forms guide walls for performing the regulation.  
   
   
       3 . The fabrication method for an optical transmission channel board according to  claim 1 , wherein said second step of forming said circuit patterns is a step of forming circuit patterns a part of which is used as an optical element marker for positioning an optical element mounted on said optical transmission channel board.  
   
   
       4 . The fabrication method for an optical transmission channel board according to  claim 3 , wherein said second step of forming said circuit patterns is a step of forming circuit patterns used as two or all selected from said electric circuit, said guide walls, and said optical element marker.  
   
   
       5 . The fabrication method for an optical transmission channel board according to  claim 1 , further comprising an A step of stacking after said second step a guide layer onto said circuit pattern which positionally regulates said optical transmission channel.  
   
   
       6 . The fabrication method for an optical transmission channel board according to  claim 1 , further comprising a B step of machining after said second step an upper part of said circuit pattern used as said electric circuit.  
   
   
       7 . The fabrication method for an optical transmission channel board according to  claim 6 , further comprising a C step of stacking after said first step a layer composed of a material different from that of said layer containing said electrically conductive material, onto said layer containing said electrically conductive material, wherein said B step is a step of machining said layer composed of the different material.  
   
   
       8 . The fabrication method for an optical transmission channel board according to  claim 2 , further comprising: 
 a third step of arranging an optical transmission channel on the basis of said circuit pattern used as guide walls;    a fourth step of forming a retention board for retaining an optical transmission channel on said substrate, in such a manner that said circuit pattern and said optical transmission channel are covered; and    a fifth step of removing said substrate from said retention board.    
   
   
       9 . The fabrication method for an optical transmission channel board according to  claim 1 , wherein said second step is a step of etching said layer containing said electrically conductive material by using a mask corresponding to said circuit patterns, and thereby forming said circuit patterns.  
   
   
       10 . The fabrication method for an optical transmission channel board according to  claim 2 , wherein said optical transmission channel is an optical fiber, and wherein a length of said guide walls measured in a perpendicular direction relative to a surface of said retention board is greater than a radius of said optical fiber.  
   
   
       11 . The fabrication method for an optical transmission channel board according to  claim 10 , wherein said guide walls are formed with predetermined spacing such that said optical transmission channel substantially contacts with said guide walls.  
   
   
       12 . The fabrication method for an optical transmission channel board according to  claim 4 , further comprising a sixth step of mounting an optical element on said circuit pattern such that said optical element is arranged above said optical transmission channel, wherein said optical element is a laser element or a photo receiving element.