Title:
OPTICAL MODULATOR AND MACH-ZEHNDER TYPE OPTICAL INTENSITY MODULATOR DRIVING METHODS USING THE OPTICAL MODULATOR
Document Type and Number:
Japanese Patent JP2518521
Kind Code:
B2
Abstract:
PURPOSE: To provide an optical modulator for compensating the self phase modulation of an optical fiber over the wide range of transmission light intensity and transmission distance.
CONSTITUTION: An inputted intensity modulation light 1 is branched into a branching light 3 and the branching light 4. The branching light 4 is converted into a phase modulation signal 6 for driving an optical phase modulator 7 and the branching light 3 is time delayed by an optical delay device 8, then phase modulated for compensating the self phase modulation by the optical phase modulator 7 and turned to an output signal light 9. Thus, since a phase Modulation degree for compensating the self phase modulation is proportional to the transmission light intensity, the self phase modulation can be compensated over the wide range of the transmission light intensity. Also, since the use in respective parts such as a transmission part, a repeater part and a reception part in an optical communication system is possible, the large self-phase modulation generated in long distance optical fiber transmission can be compensated as well.
Inventors:
NAKATANI SHOGO
Application Number:
JP16167493A
Publication Date:
July 24, 1996
Filing Date:
June 30, 1993
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
G02F2/00; G02F1/01; H04B10/07; H04B10/2507; H04B10/255; H04B10/516; H04B10/54; H04B10/548; H04B10/564; H04B10/58; H04B10/61; (IPC1-7): H04B10/152; G02F2/00; H04B10/02; H04B10/04; H04B10/06; H04B10/142; H04B10/18
Domestic Patent References:
| JP4192729A | ||||
| JP62287229A | ||||
| JP39624A |
Attorney, Agent or Firm:
Shinsuke Honjo