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Optical injection induced polarization bistability in vertical‐cavity surface‐emitting lasers
We report the observation of bistable polarization switching in a vertical‐cavity surface‐emitting laser under optical injection. The wavelength dependence of the switching is measured. It is foundExpand
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Design of a 1 Tb/s Superchannel Coherent Receiver
TLDR
We describe the design of a trained and pilot-aided digital coherent receiver, capable of detecting a 1 Tb/s superchannel with a single optical front-end. Expand
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Nonlinearity-Tolerant Four-Dimensional 2A8PSK Family for 5–7 Bits/Symbol Spectral Efficiency
TLDR
We describe in detail the recently proposed four-dimensional modulation format family based on 2-ary amplitude 8-ary phase-shift keying (2A8PSK), supporting spectral efficiencies of 5, 6, and 7 bits/symbol. Expand
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Mode-evolution-based polarization rotator-splitter design via simple fabrication process.
A mode-evolution-based polarization rotator-splitter built on InP substrate is proposed by combining a mode converter and an adiabatic asymmetric Y-coupler. The mode converter, consisting of aExpand
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Influence of external optical feedback on threshold and spectral characteristics of vertical-cavity surface-emitting lasers
We report a study of the effects of external optical feedback on the threshold and spectral characteristics of VCSELs with feedback levels in the range from /spl minus/25 dB to 0 dB. A largeExpand
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High‐frequency polarization self‐modulation in vertical‐cavity surface‐emitting lasers
Polarization self‐modulation at frequencies up to 6 GHz is observed in a vertical‐cavity surface‐emitting laser. This self‐oscillation is observed when a portion of the laser output power is injectedExpand
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Deep Neural Network Inverse Design of Integrated Photonic Power Splitters
TLDR
Predicting physical response of an artificially structured material is of particular interest for scientific and engineering applications. Expand
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Analysis of Nonlinear Fiber Interactions for Finite-Length Constant-Composition Sequences
TLDR
In order to realize probabilistically shaped signaling within the probabilistic amplitude shaping framework, a shaping device outputs sequences that follow a certain nonuniform distribution. Expand
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Phase noise-robust LLR calculation with linear/bilinear transform for LDPC-coded coherent communications
TLDR
We propose a modified log-likelihood ratio (LLR) calculation for an LDPC decoder to be robust against residual phase noise at the demodulator. Expand
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High-dimensional modulation for coherent optical communications systems.
In this paper, we examine the performance of several modulation formats in more than four dimensions for coherent optical communications systems. We compare two high-dimensional modulation designExpand
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