Title:
OPTICAL SIGNAL AMPLIFYING THREE-TERMINAL DEVICE, OPTICAL SIGNAL TRANSFER METHOD USING SAME, OPTICAL SIGNAL RELAY DEVICE, AND OPTICAL SIGNAL STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/038492
Kind Code:
A1
Abstract:
An optical signal amplifying three-terminal device (10) for directly amplifying an optical signal by using a control input light. A first input light L1 of a first wavelength &lgr 1 and a second input light L2 of a second wavelength &lgr 2 are inputted into a first optical amplifying element (26). A light of the second wavelength &lgr 2 and a third input light (control light) L3 of a third wavelength &lgr 3 outputted from the first optical amplifying element (26) are inputted into a second optical amplifying element (34). An output light L4 of the third wavelength &lgr 3 selected from the light outputted from the second optical amplifying element (34) is modulated with the intensity variation of the first input light L1 and/or the third input light L3. Therefore, the output light L4 is an amplified signal amplified with a signal amplification factor of 2 or more with respect to the third input light (control light) L3. Thus, an optical signal is directly amplified by using a control input light.
Inventors:
MAEDA YOSHINOBU (JP)
Application Number:
PCT/JP2003/011961
Publication Date:
May 06, 2004
Filing Date:
September 19, 2003
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
MAEDA YOSHINOBU (JP)
MAEDA YOSHINOBU (JP)
International Classes:
G02F2/00; G02F3/00; H04J14/02; (IPC1-7): G02F1/01; G02F3/00; H01S3/00; H01S3/10; H01S5/50
Foreign References:
| US5264960A | 1993-11-23 | |||
| US20020181831A1 | 2002-12-05 | |||
| JP2003005240A | 2003-01-08 | |||
| JP2001262319A | 2001-09-26 | |||
| JP2001264825A | 2001-09-26 | |||
| EP1367432A1 | 2003-12-03 |
Other References:
CHELLES S, ET AL: "EXTINCTION RATIO OF CROSS-GAIN MODULATED MULTISTAGE WAVELENGTH CONVERTERS: MODEL AND EXPERIMENTS", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 9, no. 6, June 1997 (1997-06-01), pages 758 - 760, XP002974675
MAEDA Y, ET AL: "ALL-OPTICAL BASED ON A TANDEM WAVELENGTH CONVERTER USING REFLECTIVE SEMICONDUCTOR OPTICAL AMPLIFIERS", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 15, no. 2, February 2003 (2003-02-01), pages 257 - 259, XP001175611
MAEDA Y: "ALL-OPTIAL TRIODE USING DUAL-STAGE WAVELENGTH CONVERTER IN ERBIUM-DOPED FIBER AMPLIFIERS", JPN. J. APPL. PHYS., vol. 41, PART 1, no. 7B, July 2002 (2002-07-01), pages 4828 - 4830, XP001163084
See also references of EP 1560062A4
Z. XIN-LIANG ET AL., CHINESE PHYSICS, vol. 10, 2001, pages 124 - 127
MAEDA Y, ET AL: "ALL-OPTICAL BASED ON A TANDEM WAVELENGTH CONVERTER USING REFLECTIVE SEMICONDUCTOR OPTICAL AMPLIFIERS", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 15, no. 2, February 2003 (2003-02-01), pages 257 - 259, XP001175611
MAEDA Y: "ALL-OPTIAL TRIODE USING DUAL-STAGE WAVELENGTH CONVERTER IN ERBIUM-DOPED FIBER AMPLIFIERS", JPN. J. APPL. PHYS., vol. 41, PART 1, no. 7B, July 2002 (2002-07-01), pages 4828 - 4830, XP001163084
See also references of EP 1560062A4
Z. XIN-LIANG ET AL., CHINESE PHYSICS, vol. 10, 2001, pages 124 - 127
Attorney, Agent or Firm:
Ikeda, Haruyuki (15-1 Meieki 3-chome, Nakamura-k, Nagoya-shi Aichi, JP)
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