Comparison of Intersymbol Interference Power Penalties for OOK and 4-PAM in Short-Range Optical Links
Journal article, 2013
We present results of experimental and theoretical investigations of intersymbol interference in 4-PAM transmission in short-range optical communications links based on the power penalty. A test link comprised of a directly modulated 850 nm VCSEL with up to 200 m of multimode fiber and direct detection was used. The link bandwidth was below 10 GHz and the maximum achieved data rate with 4-PAM was 44 Gbps over 100 m of fiber. In the same case and at similar sensitivity, only 32 Gbps could be achieved with OOK. If typical forward error correction could be applied, the sensitivity of the 4-PAM system was improved by up to 4 dB, reaching -10 dBm at 25 Gbps.
ISI
datatransmission
MMF
Intersymbol Interference
Multimode Fiber
VCSEL
datacomm
Vertical Cavity Surface Emitting Laser
PAM
Pulse Amplitude Modulation
Author
Krzysztof Szczerba
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Petter Westbergh
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Erik Agrell
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Magnus Karlsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Peter Andrekson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Anders Larsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Journal of Lightwave Technology
0733-8724 (ISSN) 1558-2213 (eISSN)
Vol. 31 22 3525-3534 6634222Areas of Advance
Information and Communication Technology
Subject Categories
Telecommunications
Communication Systems
DOI
10.1109/JLT.2013.2285468