Title:
FIBER OPTIC AMPLIFIER SYSTEM AND METHOD FOR AMPLIFYING OPTICAL SIGNAL
Document Type and Number:
Japanese Patent JP2789083
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a fiber optical amplifier system in which a signal can be injected used a same amplifying coupler by coupling a lasing fiber, a signal source, a pump source and a photocoupler through an optical fiber, such that the signal is amplified by inductive radiation at the time of passing through the lasing fiber thereby realizing symmetric bilateral amplification.
SOLUTION: Pumping illumination from a light source 42 is coupled with a signal at a port D of a coupler through amplifying action thereof. Consequently, the coupler is regulated so as to have a coupling efficiency of 100% for the wavelength of the light source 42 and a coupling efficiency of 0% for the wavelength of an input signal to the port C. A pair of signal wavelengths is fed to an ND:YAG crystal 44 coupled with a fiber 12b. A signal inputted to the port C is amplified in the ND:YAG crystal 44 and coupled with an optical fiber 46, in order to be transmitted through an optical fiber system.
Inventors:
HAABAATO JON SHO
MISHERU JEI EFU DEIGONE
MISHERU JEI EFU DEIGONE
Application Number:
JP29806495A
Publication Date:
August 20, 1998
Filing Date:
November 16, 1995
Export Citation:
Assignee:
RIIRANDO SUTANFUOODO JUNIA UNIV
International Classes:
G02B6/26; G02B6/28; G02F1/17; G02F1/313; G02B6/00; G02F1/35; H01S3/06; H01S3/07; H01S3/091; H01S3/0933; H01S3/094; H01S3/10; H01S3/23; H03F3/08; H03F3/18; H04B10/17; H01S3/067; (IPC1-7): H01S3/10; H01S3/07; H01S3/0933
Domestic Patent References:
| JP52104942A | ||||
| JP5888719A |
Other References:
【文献】米国特許3826992(US,A)
Attorney, Agent or Firm:
Fukami Hisaro (3 outside)
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