Share Email Print

Proceedings Paper

4-ary PAM signaling for increasing the capacity of metro light-wave systems
Author(s): Sivakumar Lanka; Moncef B. Tayahi; Jan Cartsens; Lutz Hofmann
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We investigated both experimentally and by simulation, non-return-to-zero (NRZ) and return-to-zero (RZ) 4-ary PAM operating at 20 Gb/s. A simple scheme to realize the quadratic signal leveling by suitably driving a MZ modulator is proposed, which provides greater than 6 dB improvement in receiver sensitivity as compared to equal level spacing. We experimentally demonstrated NRZ and RZ 10 Gbaud/s 4-ARY PAM transmissions over an 80 km standard single mode fiber (SSMF) link as a proof of concept and more detailed experimental results over longer reach will follow. Numerical simulations for the 4-ary PAM performance over longer distances (>200 km) are also presented.

Paper Details

Date Published: 1 March 2006
PDF: 7 pages
Proc. SPIE 6105, Free-Space Laser Communication Technologies XVIII, 610509 (1 March 2006); doi: 10.1117/12.648469
Show Author Affiliations
Sivakumar Lanka, Univ. of Nevada, Reno (United States)
Moncef B. Tayahi, Univ. of Nevada, Reno (United States)
Jan Cartsens, Chemnitz Univ. of Technology (Germany)
Lutz Hofmann, Chemnitz Univ. of Technology (Germany)

Published in SPIE Proceedings Vol. 6105:
Free-Space Laser Communication Technologies XVIII
G. Stephen Mecherle, Editor(s)

© SPIE. Terms of Use
Back to Top