Title:
OPTICAL WAVEGUIDE COUPLER CIRCUIT DEVICE
Document Type and Number:
Japanese Patent JP3790177
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To optimize an optical waveguide coupler circuit device so that the circuit characteristic of the device is kept constant even when the wavelength or the temperature varies.
SOLUTION: The optical waveguide coupler circuit device 8 is composed of two optical waveguide cores 2 and 3 formed on the surface of a substrate 1, as shown in Fig. 1. The optical waveguide coupler circuit device is characterized in that the optical waveguide cores 2 and 3 are covered with a lower clad layer 6 and an upper clad layer 7 which are formed on the substrate 1, two directional couplers 4 and 5 which are formed by making the optical waveguide cores 2 and 3 closer to each other in parallel are included, each factor related to the sectional form of the optical waveguide cores 2 and 3, refractive index, and circuit wiring is optimized so that the circuit characteristic is kept constant even when wavelength or temperature varies.
Inventors:
Chen snow
Isomori
Isomori
Application Number:
JP2002062409A
Publication Date:
June 28, 2006
Filing Date:
March 07, 2002
Export Citation:
Assignee:
Nitta Corporation
International Classes:
G02B6/122; G02B6/12; G02B6/34; (IPC1-7): G02B6/122
Domestic Patent References:
| JP1195052A |
Other References:
Junya Kobayashi、Tohru Matsuura、Shigekuni Sasaki、Tohru Maruno,Directional Couplers Using Fluorinated Polyimide Waveguides,JOURNAL OF LIGHTWAVE TECHNOLOGY,1998年 4月,Vol.16, No.4,p.610-614
K. Jinguji、N. Takato、A. Sugita、M. Kawachi,MACH-ZEHNDER INTERFEROMETER TYPE OPTICAL WAVEGUIDE COUPLER WITH WAVELENGTH-FLATTENED COUPLING RATIO,ELECTRONICS LETTERS,1990年 8月16日,Vol.26, No.17,p.1326-1327
K. Jinguji、N. Takato、A. Sugita、M. Kawachi,MACH-ZEHNDER INTERFEROMETER TYPE OPTICAL WAVEGUIDE COUPLER WITH WAVELENGTH-FLATTENED COUPLING RATIO,ELECTRONICS LETTERS,1990年 8月16日,Vol.26, No.17,p.1326-1327
Attorney, Agent or Firm:
Kosaku Sugimura