Title:
速度整合された半導体変調器のための低速波光導波路
Document Type and Number:
Japanese Patent JP2007510953
Kind Code:
A
Abstract:
A PIN electro-optical traveling wave modulator ( 10 ) including diffraction gratings ( 34, 36 ) positioned at opposing sides of an optical waveguide ( 20 ) that act to change the propagation pattern of the waveguide ( 20 ). The modulator ( 10 ) includes an N-type layer ( 14 ), a P-type layer ( 18 ) and an intrinsic layer ( 16 ) acting as the waveguide ( 20 ). A metal electrode ( 26 ) is in electrical contact with the N-type layer ( 14 ), and a metal electrode ( 30 ) is in electrical contact with the P-type layer ( 18 ). The electrodes ( 26, 30 ) define an RF transmission line. An optical wave ( 22 ) propagates along the waveguide ( 20 ) and interacts with the gratings ( 34, 36 ) which slow the optical wave ( 22 ) to match its speed to the speed of the RF wave in the transmission line. In one embodiment, the gratings ( 34, 36 ) are 2-D gratings formed by vertical holes ( 38 ) in the waveguide ( 20 ).
Inventors:
Wang, Wen Shen
Scott, David Sea
Twyford, Cankey Elizabeth
Scott, David Sea
Twyford, Cankey Elizabeth
Application Number:
JP2006538166A
Publication Date:
April 26, 2007
Filing Date:
October 26, 2004
Export Citation:
Assignee:
NORTHROP GRUMMAN CORPORATION
International Classes:
G02F1/015; G02B6/26; G02B6/42; G02F1/025; G02F1/295
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Otsuka Naruhiko
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Otsuka Naruhiko