Title:
光時分割多重化方法および装置
Document Type and Number:
Japanese Patent JP5152789
Kind Code:
B2
Abstract:
The present invention inputs a signal synthesized an optical pulse with a variable-wavelength laser beam different in wavelength from it to a delay unit (S1). The delay unit branches the signal to two optical signals, produces an optical path difference between them to afford a delay, synthesizes them again to generate a multiplexed optical signal, and minutely varies the optical path length of one of them (S2) The present invention measures output variance of the delay unit on a variable-wavelength laser beam resulting from the minute variance (S3), and controls the optical path difference so as to minimize output variance at a position where the output is a maximum or minimum, or is a specific value other than them (S4). This stabilizes a phase difference between adjacent pulses of the multiplexed optical signal outputted from the delay unit (S5) with a simple construction in optical time division multiplexing technology.
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Inventors:
Hiroyuki Toda
Application Number:
JP2008059125A
Publication Date:
February 27, 2013
Filing Date:
March 10, 2008
Export Citation:
Assignee:
School corporation Doshisha
International Classes:
H04J14/08; H04B10/00; H04J3/00
Domestic Patent References:
| JP2003198507A |
Attorney, Agent or Firm:
Patent Business Corporation Minori Patent Office