Title:
GRATING TYPE OPTICAL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2001/033265
Kind Code:
A1
Abstract:
A grating type optical component for compensating for a temperature dependency of EDFA at wavelengths of 1530 nm to 1535 nm and realizing wavelength multiplexing at wavelengths of 1530 nm to 1610 nm. A long frequency grating having a grating frequency change of about 300 to 500 µm is formed on an optical fiber, and a light transmission loss characteristics having a light transmission loss peak of about 1500 to 1525 $g(m)m, caused by a propagation mode and a high-order clad mode via the optical fiber's long frequency grating, are provided to the optical fiber. A temperature dependency shift amount of a light transmission loss peak wavelength is set to about 0.02/°C to 0.05/°C, with a light transmission loss (characteristic line a) at a wavelength of 1530 nm and 65°C set about 0.4 to 0.6 dB larger than that (characteristic line b) at 25°C due to that shift, whereby a gain temperature dependency in a device combining EDFA with an etalon filter is compensated for to up to ±0.2 dB.
Inventors:
TSUDA TOSHIAKI
YODO SHIGEHITO
SHIRASAKA YUSEI
EMORI YOSHIHIRO
NAMIKI SHU
YODO SHIGEHITO
SHIRASAKA YUSEI
EMORI YOSHIHIRO
NAMIKI SHU
Application Number:
PCT/JP2000/007544
Publication Date:
May 10, 2001
Filing Date:
October 27, 2000
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
G02B6/02; H01S3/10; (IPC1-7): G02B6/16; G02B6/10
Domestic Patent References:
| WO2000002291A1 | 2000-01-13 |
Foreign References:
| JPH10319259A | 1998-12-04 | |||
| EP1003253A2 | 2000-05-24 | |||
| EP1063741A2 | 2000-12-27 |
Other References:
PATRICK H.J. ET AL.: "Erbium-doped superfluorescent fibre source with long period fibre grating wavelength stabilisation", ELECTRONICS LETTERS, vol. 33, no. 24, 20 November 1997 (1997-11-20), pages 2061 - 2063, XP002936382
VENGSARKAR A.M. ET AL.: "Long-period fiber-grating-based gain equalizers", OPTICS LETTERS, vol. 21, no. 5, 1 March 1996 (1996-03-01), pages 336 - 338, XP002936383
VENGSARKAR A.M. ET AL.: "Long-period fiber gratings as band-rejection filters", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 14, no. 1, January 1996 (1996-01-01), pages 58 - 65, XP002936384
MICHIKO HARUMOTO ET AL.: "Juretsu choushuuki fiber grating ni yoru L-band you ritoku toukaki", PROCEEDINGS 1 OF ELECTRONICS SOCIETY MEETING (1999), THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEER, 16 August 1999 (1999-08-16), pages 178, C-3-72, XP002936385
VENGSARKAR A.M. ET AL.: "Long-period fiber-grating-based gain equalizers", OPTICS LETTERS, vol. 21, no. 5, 1 March 1996 (1996-03-01), pages 336 - 338, XP002936383
VENGSARKAR A.M. ET AL.: "Long-period fiber gratings as band-rejection filters", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 14, no. 1, January 1996 (1996-01-01), pages 58 - 65, XP002936384
MICHIKO HARUMOTO ET AL.: "Juretsu choushuuki fiber grating ni yoru L-band you ritoku toukaki", PROCEEDINGS 1 OF ELECTRONICS SOCIETY MEETING (1999), THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEER, 16 August 1999 (1999-08-16), pages 178, C-3-72, XP002936385
Attorney, Agent or Firm:
Igarashi, Kiyoshi (Takashima 2-chome Nishi-ku, Yokohama-shi Kanagawa, JP)
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