Optical fiber amplifier and optical amplifier repeater

Details Optical fiber amplifier and optical amplifier repeater Optical fiber amplifier and optical amplifier repeater

1995-11-24

1998-02-24

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359160, H01S 300

Patent

active

057216355

ABSTRACT:
This method comprises the steps of: introducing light signals having different wavelengths into an optical amplifier, wherein the optical amplifier has a plurality of fibers with rare earth element doped therein and P is selectively doped in said fibers; and introducing excitation light into the fibers, the excitation light being able to excite the rare earth element. At least one of the fibers has Al therein and the relationship between the Al and P concentration satisfies following expression: C(P)/C(Al)>2, where, C(P) is P concentration in the fiber, and C(Al) is Al concentration in the fiber.

REFERENCES:
patent: 5050949 (1991-09-01), DiGiovanni et al.
patent: 5111334 (1992-05-01), Heidemann
patent: 5115338 (1992-05-01), DiGiovanni et al.
patent: 5131069 (1992-07-01), Hall et al.
patent: 5185814 (1993-02-01), Healey
patent: 5392153 (1995-02-01), Delavaux
patent: 5430572 (1995-07-01), DiGiovanni et al.
Hansen et al, "Gain Tilt of Erbium-Doped Fiber Amplifiers Due to Signal-Induced Inversion Locking", IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1993, pp. 409-411.
Kashiwada et al, "Spectral Gain Behavior of Er-Doped Fiber With Extremely High Aluminum Concentration", pp. 104-107.
Atkins et al, "High-Gain, Broad Spectral Bandwidth Erbium-Doped Fibre Amplifier Pumped Near 1.5.mu.m", Electronics Letters, vol. 25, No. 14, Jul. 1989, pp. 910-911.
Hall et al, "Gain Spectra and Amplifier Enhancement", OFC '94 Technical Digest, Friday Morning, pp. 270-271.
Shigematsu et al, "Distortion-Free Optical Fiber Amplifier for Analog Transmission Based on Hybrid Erbium-Doped Fiber Configuration" Affiliated with Sumitomo Electric Industries, Ltd.
Kashiwada et al, "Gain Flattened Optical Fiber Amplifiers for WDM Transmission Employing Hybrid Erbium-Doped Fiber Configuration", Affiliated with Sumitomo Electric Industries, Ltd.
Kuo et al, "Low Distortion Amplifier Analog CATV Transport System", AT&T Bell Laboratories, Breinigsville, PA 18031, pp. 340-342.
Chraplyvy et al, "End-to-End Equalization Experiments in Amplified WDM Lightwave Systems", IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1993, pp. 428-429.
Toba et al, "A 100-Channel Optical FDM Six-Stage In-Line Amplifier System Employing Tunable Gain Equalizers", IEEE Photonics Technology Letters, vol. 5, No. 2, Feb. 1993, pp. 248-251.
Marcerou et al, "Basic Comparison Between Fluoride- and Silica-Doped Fiber Amplifiers in the 1550nm Region", MoA2.3, pp. 53-56.
Goldstein et al, "Inhomogeneously Broadened Fiber-Amplifier Cascade for Wavelength-Multiplexed Systems", pp. 45-48.
Eskildsen et al., Optical Power Equalization for Multiwavelength Fiber-Amplifier Cascades Using Periodic Inhomogeneous Broadening, IEEE Photonics Technology Letters, 5 (1993), Oct., vol. 5, No. 10, pp. 1188-1190.
Willner et al.,Passive Equalization of Nonuniform EDFA Gain by Optical Filtering for Megameter Transmission of 20 WDM Channels Through a Cascade of EDFA's,IEEE Photonics Technology Letters,4 (1993) Sep.,vol. 5,No. 9, pp. 1023-1026.

Affiliated with

Also associated with

Rating

Optical fiber amplifier and optical amplifier repeater does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical fiber amplifier and optical amplifier repeater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber amplifier and optical amplifier repeater will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1878301