Title:
光導波回路及び光導波回路の製造方法
Document Type and Number:
Japanese Patent JP5402802
Kind Code:
B2
Abstract:
An optical waveguide device includes an optical branch device for branching a first input light and outputting the branched first input light to a first and a second optical waveguides, another optical branch device, arranged between the first and the second optical waveguides, for branching a second input light and outputting the branched second input light to a third and a fourth optical waveguides, an optical coupler which couples the lights traveling along the first and the third optical waveguides, then branches the coupled lights, and outputs them; and another optical coupler which couples the lights traveling along the second and the fourth optical waveguides, then branches the coupled lights, and outputs them, wherein optical path lengths of either a pair of the first and the second optical waveguides or a pair of the third and the fourth optical waveguides are set to be equal.
Inventors:
Shinya Watanabe
Application Number:
JP2010090451A
Publication Date:
January 29, 2014
Filing Date:
April 09, 2010
Export Citation:
Assignee:
NEC Corp.
International Classes:
G02B6/122
Attorney, Agent or Firm:
Desk Masahiko
Naoki Shimosaka
Naoki Shimosaka