公开(公告)号：JPH0815537A

公开(公告)日：1996-01-19

申请号：JP4082391

申请日：1991-02-14

Applicant: IBM

Inventor： BANSEN FUAN ,  DONISU JIYOOJI FURAJIERO ,  JIEFURII DONARUDO JIEROOMU ,  MODESUTO MAIKURU OPURISUKO ,  ARUBAATO SUPIISU ,  JIININ MADERIN TOREHOERA

IPC: B32B7/02 ,  B32B27/38 ,  C08G59/20 ,  G02B1/04 ,  G02B6/12 ,  G02B6/13 ,  G02B6/138

Abstract: PURPOSE: To make it possible to obtain low propagation loss and high environmental safety by constituting the optical waveguide of a layer of a polymer material contg. epoxy groups having different degrees of polymn. and eventually a preselected range of different refractive indices. CONSTITUTION: This polymer-like optical waveguide consists of the layer of the polymer-like material contg. the epoxy groups having the different degrees of polymn. and eventually the preselected range of the different refractive indices. In such a case, the optical waveguide is constituted by coating a suitable base body 10 with a layer 20 of a coating material, for example, quartz, glass, polymer, etc. This coating layer has the refractive index lower than the refractive index of the core or polymer optical waveguide material and is optical. The layer described above is then coated with a layer 30 of a photosensitive polymer, more typically an Epirezsu 8 having a photoacid. The coatings applied on the base body are then subjected to baking for several minutes. The negative photomask formed in such a manner forms the desired patterns of exposed regions 40 and unexposed regions 50.

公开(公告)号：JPH03234112A

公开(公告)日：1991-10-18

申请号：JP33701890

申请日：1990-11-30

Applicant: IBM

Inventor： BANSEN FUAN ,  RITSUKII AREN RANDO

IPC: H03K17/78 ,  H03K3/037 ,  H03K3/356 ,  H03K3/42 ,  H03K17/16

Abstract: PURPOSE: To convert an optical pulse into an electric pulse that has high speed rise by forming a receiving means that receives a photoirradiation pulse and a set/reset flip-flop means which has a pair of cross-connected switching means on the same substrate. CONSTITUTION: An optical pulse is supplied to each switching device Q1 and Q2 in order to switch the devices Q1 and Q2 of a set/reset flip-flop 10 that has a pair of switching devices Q1 and Q2 between an ON state and an OFF state alternately. An optical input device or the gate of a FET transistor is integrated together with the devices Q1 and Q2 on a common substrate. Thereby, an optical pulse can be converted into an electric pulse that has high speed rise and small timing uncertainty.