1,720,980 research outputs found
Kramers-Kronig receiver without digital upsampling
No full textWe propose a new Kramers-Kronig receiver which does not require digital upsampling. The experimental demonstration performed in 80-km transmission of 112-Gb/s SSB-OFDM signal shows that our proposed receiver exhibits similar performance to the conventional one
A Simple Time-Domain CSPR Measurement Method for Optical Single Sideband Signal
No full textWe present a simple and accurate method to measure the carrier-to-signal power ratio of optical single sideband signals and compare the proposed method with the conventional one based on optical spectrum analyzer
Coherent versus Kramers-Kronig Transceivers in Metro Applications: A Power Consumption Perspective
No full textWe estimate power consumption of coherent and Kramers-Kronig (KK) transceivers with various configurations. We show that KK transceivers consume comparable power with coherent transceiver, but the upsampling-free KK transceiver consumes 33% less power than coherent one
Coaxial Double Cubic Lattice Constellation for Stokes Vector Direct-Detection Receiver
No full textWe propose a new 16-ary modulation format for Stokes vector direct-detection receiver. This format incurs < 0.7-dB receiver sensitivity penalty with respect to the optimum 16-ary constellation, but the transmitter complexity is reduced significantly
Probabilistic Amplitude Shaping for IM/DD System Using Hard-Decision Decoding
No full textWe present an efficient way to apply the probabilistic amplitude shaping to intensity-modulation/direct-detection systems utilizing the Reed-Solomon hard-decision forward error correction. The shaping gain of up to 1 dB is achieved for PAM-8 signal
Signal Processing for Optical Communication System Assisted by Computer Vision Techniques
No full textWe review the recent progress on the application of image processing techniques to optical communication systems. The focus is placed mainly on the implementation complexity and performance of the techniques for optical performance monitoring and the compensation of common phase error. We also briefly introduce several applications where machine learning algorithms could be beneficial to fiber-optic transmission system
80-km Reach 28-Gb/s/λ RSOA-based Coherent WDM PON Using Dither-Frequency-Tuning SBS Suppression Technique
No full textWe experimentally demonstrate 80-km transmission of 28-Gb/s QPSK signal in loopback-configured coherent WDM PON using RSOAs. Dither frequency is tuned to suppress the SBS and minimize the adverse effect of broadened linewidth on carrier phase estimation
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