公开(公告)号：EP0165555A3

公开(公告)日：1988-04-06

申请号：EP85107304

申请日：1985-06-13

Applicant: POLAROID CORPORATION

Inventor： P.O. Box 96 Stillriver

IPC: G02F01/05 ,  G02F01/29 ,  H04B09/00

CPC classification number: G02F1/035 ,  G02F1/3137 ,  G02F2201/066 ,  Y10S359/90

Abstract: A method for externally modulating an optical carrier wave by propagating the wave through a single channel waveguide structured to have an output the optical power of which in the near field is distributed in a predetermined spatial pattern, selectively changing the optical power distribution pattern in correspondence with an information signal, and spatially filtering the power distribution pattern so that only the power available within selected region of the pattern is transmitted beyond the point of spatial filtering where it is available as an optical carrier wave the intensity of which is modulated in correspondence with the information signal.