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US Patent 6512628 - Distributed optical amplifier, amplifying method, and optical communication system
US Patent Issued on January 28, 2003
Estimated Patent Expiration Date:
October 25, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 25, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA distributed optical amplifier comprises an optical amplifying medium for distributed optical amplification, light supplying means for supplying a pump light to said optical amplifying medium, a pump light detecting part for detecting optical power of said pump light, adjusting means for adjusting an incident power of the light amplified with said optical amplifying medium, and control means for adjusting incident optical power of said light according to an output of said pump light detecting means. Because of this, the present invention can be controlled with a simplified structure of an optical power of an pump light, and an optical power of light to be amplified. A distributed optical amplifier as such can, for example, be applied in optical transmission systems.Other References
| InventorsApplicationNo. 695187 filed on 10/25/2000US Classes:359/334Raman or Brillouin processField of Search359/334, Raman or Brillouin process359/337.1, Spectral gain flattening or equalization359/341.1, Optical fiber359/341.3, Pumping359/341.41, Automatic Gain Control (AGC)359/341.42, Automatic Level Control (ALC)372/3RAMAN LASERExaminersPrimary: Tarcza, Thomas H.Assistant: Hughes, Deandra M. Attorney, Agent or FirmUS Patent References5058974, Distributed amplification for lightwave transmission systemIssued on: 10/22/1991 Inventor: Mollenauer5392377, Optical transmission system for transmission of signals with a continuous application of the signals during transmission Issued on: 02/21/1995 Inventor: Auracher5812710, Apparatus and method for optical equalization and amplification Issued on: 09/22/1998 Inventor: Sugaya6055092, Multi-wavelength light amplifier Issued on: 04/25/2000 Inventor: Sugaya, et al. 6188508, 6292288, Raman amplifier, optical repeater, and raman amplification method Issued on: 09/18/2001 Inventor: Akasaka, et al.6323993Method of optical signal transmission with reduced degradation by non-linear effects Issued on: 11/27/2001 Inventor: Hansen, et al. Foreign Patent References
International ClassH01S 003/00Foreign Application Priority Data2000-03-06 JP |
