Fundamental information-density limits in optically amplified transmission: an entropy analysis

被引:10
作者
Desurvire, E [1 ]
机构
[1] Alcatel, Submarine Networks Div, F-91625 Nozay, France
关键词
Entropy - Error correction - Infrared radiation - Optical communication - Quantum theory - Spurious signal noise;
D O I
10.1364/OL.25.000701
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Fundamental information-density limits are evaluated for amplified systems, based on entropy analysis. It is shown that in-line amplification introduces information loss, which is more important in distributed than in lumped amplification. In the absence of any other degradation (such as that which comes from dispersion and nonlinearity), spectral efficiencies of 6-14 (bits/s)/Hz represent theoretical limits for medium- and long-haul amplified systems. (C) 2000 Optical Society of America.
引用
收藏
页码:701 / 703
页数:3
相关论文
共 6 条
  • [1] DESURVIRE E, 1994, ERBIUM DOPE FIBER AM
  • [2] QUANTUM EFFECTS IN COMMUNICATIONS SYSTEMS
    GORDON, JP
    [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1962, 50 (09): : 1898 - &
  • [3] A MATHEMATICAL THEORY OF COMMUNICATION
    SHANNON, CE
    [J]. BELL SYSTEM TECHNICAL JOURNAL, 1948, 27 (03): : 379 - 423
  • [4] *SOC EL EL, 1999, P EUR C OPT COMM
  • [5] STARK J, 1999, P EUR C OPT COMM
  • [6] SOME QUANTUM EFFECTS IN INFORMATION CHANNELS
    STERN, TE
    [J]. IRE TRANSACTIONS ON INFORMATION THEORY, 1960, 6 (04): : 435 - 440