Title:
OPTICAL TRANSMITTER
Document Type and Number:
Japanese Patent JP3042605
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provided an optical transmitter which is capable of easily changing combination between the output light of a light source, having plural wavelength and plural data signal trains to modulate the output light.
SOLUTION: In this optical transmitter provided with N pieces of light sources 21 to 2N emitted by N pieces of drive circuits 11 to 1N, N pieces of light modulators 41 to 4N and drive circuits 51 to 5N which are fixedly connected to the light modulators and to input an electric signal for modulation, an N×N light switch 3 and a light switch control circuit 6 to control switchover of an input/output pass of the light switch 3 are provided between N pieces of light sources and the light modulators. The combination between a light signal from the light sources and plural data signals to modulate the light signals is arbitrarily changed by switching a connecting state of an input port and an output port of the N×N light switch 3 by the light switch control signal 6.
Inventors:
Mizuyuki Gozawa
Application Number:
JP4485697A
Publication Date:
May 15, 2000
Filing Date:
February 14, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04B10/516; H04B10/07; H04B10/548; H04B10/564; H04B10/61; H04J1/04; H04J14/00; H04J14/02; (IPC1-7): H04B10/152; H04B10/04; H04B10/06; H04B10/142; H04J1/04; H04J14/00; H04J14/02
Domestic Patent References:
| JP7202846A | ||||
| JP5190958A | ||||
| JP5102946A | ||||
| JP6350563A |
Attorney, Agent or Firm:
Yasuo Suzuki