Title:
OPTICAL CLOCK SIGNAL REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JPH08240826
Kind Code:
A
Abstract:
PURPOSE: To reproduce a clock signal from a high-speed light signal without necessitating a strict demand.
CONSTITUTION: Specified two frequency components are taken out from a laser beam oscillating with a single frequency. One frequency taken out is changed, a light signal data string is multiplexed to it (30), the multiplexed optical phase is detected (27) and the shift amount of the frequency is controlled so that the phases are made to be coincident with each other. The beat component between the other frequency component and the frequency component whose frequency is shifted is taken out as a light clock signal.
Inventors:
ITO FUMIHIKO
AIZAWA SHIGEKI
AIZAWA SHIGEKI
Application Number:
JP4538995A
Publication Date:
September 17, 1996
Filing Date:
March 06, 1995
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G02F2/00; H04B10/07; H04B10/516; H04B10/61; (IPC1-7): G02F2/00; H04B10/04; H04B10/06; H04B10/142; H04B10/152
Attorney, Agent or Firm:
Naotaka Ide (1 person outside)
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