Title :
Efficient Orthogonal Modulation Enabled by Injection Locked Limiting Amplifiers
Author :
Fragkos, Alexandros ; Bogris, Adonis ; Syvridis, Dimitris
Author_Institution :
Dept. of Inf. & Telecommun., Nat. & Kapodistrian Univ. of Athens, Athens, Greece
Abstract :
We propose and experimentally demonstrate a novel receiver architecture based on injection locking for demodulating a DPSK/ASK orthogonally modulated signal. The receiver exploits the limiting amplification of an injection locked laser to discriminate the two data streams, enhance the performance of DPSK, and increase the ASK extinction ratio up to 8 dB, making this modulation format suitable for the cost-efficient capacity upgrade of metro networks.
Keywords :
amplitude shift keying; differential phase shift keying; optical fibre amplifiers; optical modulation; optical receivers; ASK; DPSK; amplitude shift keying; differential phase shift keying; extinction ratio; injection locked laser; injection locked limiting amplifiers; injection locking; metro networks; orthogonal modulation; receiver architecture; Amplitude shift keying; Differential phase shift keying; Erbium-doped fiber amplifier; Optical attenuators; Receivers; Semiconductor lasers; Communication system performance; injection locked amplifiers; lasers and optical signal processing; semiconductor lasers and optical signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2246834
