Title:
【発明の名称】波長多重光通信用光源
Document Type and Number:
Japanese Patent JP3016370
Kind Code:
B2
Abstract:
Disclosed is a light source for wavelength division multiplexing communications which has: a unit for outputting light with a wavelength band having a constant width; a unit for dividing the light into first dividied light and second divided light; at least one selective wavelength blocking unit which blocks selectively light with a specific wavelength of the first divided light to output light that the light with a specific wavelength is removed; a unit for conducting such a phase control that the phase difference between the selectively-wevelength-blocked light and the second divided light is 180 DEG to each other and for outputting first phase-controlled light and second phase-controlled light; and a coupling for coupling the first phase-controlled light and the second phase-controlled light to output coupled light.
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Inventors:
Atsushi Toyohara
Katsushi Akahori
Katsushi Akahori
Application Number:
JP4414497A
Publication Date:
March 06, 2000
Filing Date:
February 27, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04J14/00; H04B10/548; H04J14/02; (IPC1-7): H04J14/00; H04B10/02; H04B10/04; H04B10/06; H04B10/14; H04B10/18; H04J14/02
Domestic Patent References:
| JP265432A | ||||
| JP923192A | ||||
| JP9247098A | ||||
| JP6324728A | ||||
| JP63104530A | ||||
| JP7162368A | ||||
| JP1051388A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)