Performance evaluation of optically pre-amplified PPM systems

Author

Phillips, A.J. ; Cryan, R.A. ; Senior, J.M.

Author_Institution

Dept. of Electr. & Electron. Eng., Manchester Metropolitan Univ., UK

Volume

6

Issue

5

fYear

1994

fDate

5/1/1994 12:00:00 AM

Firstpage

651

Lastpage

653

Abstract

An original analysis is presented for an optical fiber n-ary pulse position modulation (PPM) system employing optical preamplification. The theoretical results, from calculations performed at a bit-rate of 622 Mbit/s and a wavelength of 1.53 μm, demonstrate that the PPM system offers a 7.5 dB sensitivity benefit in comparison with an equivalent PCM system. Furthermore the results illustrate that optically preamplified PPM offers sensitivities significantly better than the fundamental limit of an optically preamplified PCM system and in fact approaches that of coherent detection.

Keywords

optical links; optical modulation; pulse position modulation; sensitivity; 1.53 mum; 622 Mbit/s; PPM system; coherent detection; equivalent PCM system; optical fiber n-ary pulse position modulation system; optical preamplification; optically pre-amplified PPM systems; optically preamplified PPM; performance evaluation; sensitivity; Fiber nonlinear optics; Nonlinear optics; Optical filters; Optical modulation; Optical noise; Optical pulses; Optical receivers; Optical sensors; Optical solitons; Pulse modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.285569

Filename

285569