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Sensitivity analysis and optimization of sub-wavelength optical gratings using adjoints
Sensitivity analysis sub-wavelength optical gratings
2015/8/6
Numerical optimization of photonic devices is often limited by a large design space: the finite-differences gradient method requires as many electric field computations as there are design...
A Prototype of Signal Degradation Monitor Based on Wavelength Resolved Stokes Vector Analysis Featuring a Function of Identification of the Cause of Degradation
Optical communications Networks
2015/5/26
We resolved signal degradations due to DGD and OSNR from a single monitor source.We verified a precision of +/-0.2dB of Q-value experimentally with a monitor prototype and 160Gb/s signal.
Phase Division Analysis for Intradyne Coherent Detection in Nonlinear Regime
Nonlinear Regime Intradyne Coherent Detection Phase Division Analysis
2015/5/15
We propose a phase division analysis method that adaptively moderates nonlinear distortion revealed in intradyne QAM receivers. The received signals are de-interleaved in accordance with recovered car...
Neural Analysis of Top Shielded Multilayered Coplanar Waveguides
Coplanar Waveguides Effective Relative Permittivity Characteristic Impedance
2009/7/28
Artificial neural networks (ANNs) have been promising tools for many applications. In recent years, a computer-aided design approach based on (ANNs) has been introduced to microwave modelling, simulat...
Complete Characterization of PMD Vector through Time-resolved Waveform Analysis Based on xy-field Sampling
PMD Vector Time-resolved Waveform Analysis xy-field Sampling
2015/7/20
We develop a method for characterizing PMD vector including high-order components through temporal waveform analysis based on xy-field sampling. Simultaneous monitoring of PMD vector and eye diagram o...
Mode-Coupling Analysis of Multipole Symmetric Resonant Add/Drop Filters
Mode-Coupling Analysis Multipole Symmetric Resonant Add/Drop Filters
2015/8/12
Time-dependent mode-coupling theory is used to analyze a type of resonant add/drop filter based on the excitation of degenerate symmetric and antisymmetric modes. Flat-top transfer functions are...