Optical amplifier

Optical: systems and elements – Optical amplifier – Optical fiber

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

06853480

ABSTRACT:
The present invention relates to a main wavelength band of a pump light source capable of improving the pump efficiency while using 1.6 μm fluorescence emitted from Ho3+:5I5→5I7transition as an optical amplifier, and an assistant pump wavelength band capable of accomplishing population inversion between5I5level and5I7level to improve the signal gain characteristics of such amplifier. The optical amplifier using optical materials to which holmium or holmium and terbium, holmium and europium, holmium and neodymium or holmium and dysprosium, etc. are doped can be pumped using a light source that emits light of 11,200˜11,500 cm−1or a light source that emits light of 6,000˜6,500 cm−1.

REFERENCES:
patent: 3786365 (1974-01-01), Robinson et al.
patent: 5042039 (1991-08-01), Edagawa et al.
patent: 5341237 (1994-08-01), Tohmon et al.
patent: 5432806 (1995-07-01), Snitzer
patent: 5861981 (1999-01-01), Jabr
patent: 6407853 (2002-06-01), Samson et al.
patent: 6413891 (2002-07-01), Cho et al.
patent: 6549330 (2003-04-01), Choi et al.
patent: 6667257 (2003-12-01), Cole et al.
patent: 20010026654 (2001-10-01), Kasamatsu
Saissy et al, Journal of Lightwave Tech., vol. 9, # 11, PP 1467-1470, 11/91. Abstract only herewith.*
Funk et al, Electronics Letters, vol. 33, No. 23, PP 1958-1960, Nov. 6, 1997; Abstract only herewith.*
Carbonnier et al, Electronics Letters, vol. 34, No. 9, pp 893-894, Apr. 30, 1998; Abstract only herewith.*
Funk et al, IEEE Jour. Quantum Mechanics, vol. 37, No. 8, pp 980-992, 8/01; Abstract only herewith.*
Choi et al. Trivalent holmium-activated fluoride fiber for potential 1340/spl sim/1400nm optical amplifiers. OFC 2002. Mar. 17-22, 2002. pp. 462-463.*
M.C. Brierley, et al.; Lasting at 2:08 um and 1.38 um in a Holmium . . : Electronics Letters; Apr. 1998, vol. 24, No. 9, pp. 539-540.
D. S. Funk, et al.; Excitation Spectra of the Green . . ; IEEE Photonics Technology Letters.; Feb. 1993; vol. 5, No. 2, pp. 154-157.
X.X. Zhang, et al.; Ho3+ to Yb3+ back transfer and thermal . . ; Appl. Phys. Lett.; Nov. 1993; vol. 63, No. 19, pp. 2606-2607.
T. Schweizer, et al.; Infrared emission from holmium . . ; Infrared Physics & Technology; 40(1999) 329-335.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-3485450

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.