Optical waveguides – Optical fiber waveguide with cladding
Patent
1995-09-12
1996-10-22
Healy, Brian
Optical waveguides
Optical fiber waveguide with cladding
385 24, 385126, 385141, 359115, 359161, G02B 602, H04B 1000
Patent
active
055685838
ABSTRACT:
The present invention is intended to provide a dispersion compensating optical fiber for wavelength division multiplex optical communication. A refractive index distribution of the dispersion compensating optical fiber is set to be W-shaped, an outside of a core is formed as an internal clad layer and the outside of the internal clad layer is formed as an outermost clad layer made of pure silica. Germanium for raising the refractive index by 2.8% in a specific refractive index difference is doped in the core, and fluorine is uniformly doped in the internal clad layer so that the refractive index is reduced by 0.45% in the specific refractive index difference. A diameter ratio of the core and the internal clad layer is set to be in a range of 1:1.5 to 1:4.0, a wavelength dispersion slope is set to be in a negative area, and dispersion is controlled to a negative high dispersion structure of -100 ps/km-nm or under.
REFERENCES:
patent: 4093343 (1978-06-01), Hargrove
patent: 4261639 (1981-04-01), Kogelnik et al.
patent: 4447125 (1984-05-01), Lazay et al.
patent: 4877304 (1989-10-01), Bhagavatula
patent: 4969710 (1990-11-01), Tick et al.
patent: 5013131 (1991-05-01), Fotheringham
patent: 5131069 (1992-07-01), Hall et al.
patent: 5191631 (1993-03-01), Rosenberg
patent: 5218662 (1993-06-01), Dugan
patent: 5224183 (1993-06-01), Dugan
patent: 5278931 (1994-01-01), Antos et al.
patent: 5430822 (1995-07-01), Shigematsu et al.
patent: 5448674 (1995-09-01), Vengsarkar et al.
patent: 5473719 (1995-12-01), Stone
Onishi, Masahi; Kanamori, Hiroo; Watanabe, Minoru, "Fabrication of Dispersion Compensating Fibers with Double Cladding Profile," Sep. 5, 1994, Incorporate Institute of Electronic Information and Communication Engineers of Japan.
Kanamori, Masashi; Onishi, Masahi; Fukuda, Chie; Yokota, Hiroshi, "Double-Cladding Dispersion-Compensating Fiber," Mar. 10, 1994, Incorporate Institute of Electronics and Communication Engineers of Japan.
Vengsarker, Ashish M.; Reed, W. A., "Dispersion-Compensating Single Fibers: Efficient Designs for First-and-Second-order Compensation," Jun. 1, 1993, Optical Society of America.
Kuwaki, Nobuo; Ohashi, Masaharu; Uesugi, Naoshi, "Dispersion and Bending Loss Sensitivities of W-Type Dispersion-Modified Single-Mode Fibers", Oct. 25, 1988, The Institute of Electronics, Information and Communication Engineers.
Okamoto, K.; Edahiro, T.; Kawana, A.; Miya, T.; "Low Dispersion Single-Mode Optical Fibers over a Wide Spectral Range," Jan. 24, 1980, Incorporate Institute of Electronics and Communication Engineers of Japan.
Belov, A. V. et al., "The Realization of Broad-Band Dispersion Compensation using the Multicladding Waveguide Structure", 19th European Conference on Optical Communication Proceedings, vol. 2, pp. 349-352, Sep. 12, 1993.
Vengsarkar, A. M. et al., "Fundamental-mode Dispersion-compensating Fibers: Design Considerations and Experiments," OFC '94 Technical Digest, ThK2, pp. 225-227, Feb. 20, 1994.
Onishi, M. et al., "Dispersion Compensating Fibers with Low Attenuation", Technical Report of Institute of Electronics, Information and Communication Engineers, pp. 52-56 and one page Abstract in English, Aug. 27, 1993.
Akasaka Youichi
Kokura Kunio
Sugizaki Ryuichi
Umeda Atsushi
Furukawa Electric Co. Ltd.
Healy Brian
LandOfFree
Dispersion compensating optical fiber for wavelength multiplex t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dispersion compensating optical fiber for wavelength multiplex t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dispersion compensating optical fiber for wavelength multiplex t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2366133