We demonstrate 10-Gb/s transmission over more than 130 km of G.652 fiber using a simple directly modulated distributed feedback (DFB) laser and a new “chirp-managed” approach based on a low-complexity coherent receiver. The “chirp-managed” effect, which has been obtained in the past by optical spectral reshaping, is conveniently achieved here by means of simple electrical filtering of the received signal at the intermediate frequency. Due to coherent detection, the receiver sensitivity was -38 dBm at bit error rate (BER) 1/4 1.8 χ 10-3. No colored filters and no dispersion compensation (optical or digital signal processing (DSP)-based) were used at the receiver side. We show that the coherent system presented here, based on off-the-shelf components, is robust against variations of DFB chirp, local oscillator detuning, and electrical filter bandwidth over ranges wide enough to guarantee a simple and cost-effective implementation for 10-Gb/s long-reach passive optical network applications.

10-Gb/s Long-Reach PON System With Low-Complexity Dispersion-Managed Coherent Receiver

PRESI, Marco;
2015-01-01

Abstract

We demonstrate 10-Gb/s transmission over more than 130 km of G.652 fiber using a simple directly modulated distributed feedback (DFB) laser and a new “chirp-managed” approach based on a low-complexity coherent receiver. The “chirp-managed” effect, which has been obtained in the past by optical spectral reshaping, is conveniently achieved here by means of simple electrical filtering of the received signal at the intermediate frequency. Due to coherent detection, the receiver sensitivity was -38 dBm at bit error rate (BER) 1/4 1.8 χ 10-3. No colored filters and no dispersion compensation (optical or digital signal processing (DSP)-based) were used at the receiver side. We show that the coherent system presented here, based on off-the-shelf components, is robust against variations of DFB chirp, local oscillator detuning, and electrical filter bandwidth over ranges wide enough to guarantee a simple and cost-effective implementation for 10-Gb/s long-reach passive optical network applications.
2015
chirp modulation
distributed feedback lasers
error statistics
optical information processing
optical pulse shaping
optical receivers
passive optical networks
BER
DFB chirp
G.652 fiber
bit error rate
bit rate 10 Gbit/s
chirp-managed� approach
digital signal processing
distance 130 km
distributed feedback laser
electrical filter bandwidth
electrical filtering
local oscillator detuning
long-reach PON system
low complexity dispersion-managed coherent receiver
optical signal processing
optical spectral reshaping
passive optical networks
receiver sensitivity
Chirp
Optical fibers
Optical receivers
Optical sensors
Optical transmitters
Passive optical networks
Coherent communications
Fiber optics and optical communications
Optical Communications
fiber optics and optical communications
optical communications
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12606/10917
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