公开(公告)号：JPH04218003A

公开(公告)日：1992-08-07

申请号：JP4547291

申请日：1991-02-19

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： KUROUDEIO KARUDERA ,  KARURO DE BERUNARUDEI ,  SARUBUATOORE MORAASUKA

IPC: G02B6/122 ,  G02B6/13 ,  G02B6/132

Abstract: PURPOSE: To obtain the method for adjusting the operation characteristics of an integrated optical device. CONSTITUTION: An upper layer SA for a transparent substance having length M and proper size and refractive index is applied to the surface of a substrate SU after completing a normal manufacturing processing for a device. Consequently the fairly large number of devices deviated from tolerance can be recovered.