公开(公告)号：WO1993003411A1

公开(公告)日：1993-02-18

申请号：PCT/US1992004853

申请日：1992-06-03

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  HAASE, Michael, A. ,  MISEMER, David, K.

IPC: G02F01/025

CPC classification number: G02F1/025 ,  G02F2001/0155 ,  G02F2001/0157

Abstract: A semiconductor heterojunction, guided-wave, electroabsorption modulator (10). The device (10) includes a rib waveguide (12) fabricated on a substrate (14). The waveguide (12) includes a relatively thin and off-center undoped electroabsorbing layer (42) within a light-guiding region (16). Electrodes (26, 28) configured for interconnection to an external voltage source produce an electric field within the waveguide (12). Heavily doped field confining layers (38, 40) on opposite sides of the electroabsorbing layer (42) confine the electric field within the electroabsorbing layer to cause the electroabsorption of radiation in accordance with the Franz-Keldysh effect.