Title:
OPTICAL MODULATING AND OPTICAL MULTIPLEXING CIRCUIT
Document Type and Number:
Japanese Patent JP3936886
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simplify manufacturing processes and to realize stable operation by performing hybrid integration of a plurality of nonlinear optical waveguide elements and a quartz optical waveguide with small connection loss through a small number of steps for manufacturing process.
SOLUTION: A lithium niobate (LiNbO3) optical waveguide 108 having a domain-inverted structure is used as a nonlinear optical switch and glass waveguides 105 and 110 are joined with an input/output end of the optical waveguide 108 to realize functions of receiving, branching, and coupling signal light and clock light needed for modulation and multiplexing and making timing adjustments. A nonlinear medium while generating 2nd higher harmonic light of the clock pulse light generates light corresponding to the difference frequency between the generated 2nd higher harmonic light and signal pulse light as an output.
Inventors:
Takuya Ohara
Hidehiko Takara
Company house Ippei
Satoru Kawanishi
Hidehiko Takara
Company house Ippei
Satoru Kawanishi
Application Number:
JP2002143759A
Publication Date:
June 27, 2007
Filing Date:
May 17, 2002
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02F1/377; G02F1/39; H04J14/08; H04L7/00; (IPC1-7): G02F1/39; G02F1/377
Domestic Patent References:
| JP11072757A | ||||
| JP10227936A |
Other References:
Electronics Letters,2000年,Vol.36,No.18,1568-1569
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe
Previous Patent: METHOD FOR DISPLAYING THREE-DIMENSIONAL MAP
Next Patent: COUNTER WEIGHT AND ITS MANUFACTURING METHOD
Next Patent: COUNTER WEIGHT AND ITS MANUFACTURING METHOD