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Edward Grace

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Imperial College London

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09 Aug 2010 Screenshot Example of Volatility Pumping This script demonstrates the phenomenon of excess growth in a constant rebalancing portfolio. Author: Edward Grace finance, shannons demon, crp, portfolio, rebalance 19 0
24 May 2010 Screenshot GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace pde, fft, nonlinear, simulation, soliton, 1d 38 8
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Comments and Ratings by Edward Grace View all
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07 Aug 2011 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace

As defined the example model for pulse propagation will work in normalised units. I strongly recommend reading the example alongside the cited section of Agrawal's "Nonlinear Fiber Optics".

24 May 2011 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace

Mohsin. "..is there anything for birefringence or polarization in this toolbox?". No, not explicitly.

"can we simulate pulse propagation in a birefringent fiber by this toolbox?"

Like many things the answer is "it depends".

As long as you can approximate whatever it is that you want to do as being scalar then the answer is "yes" -- just use an effective refractive index for each (decomposed) polarisation. And model it as two separate (decoupled) problems.

If on the other hand the important effect that you want to capture is due to off-diagonal terms in the nonlinear permettivity tensor that strongly couple between polarisation states then the answer is a resounding "No!"; it's tough enough generalising to an N dimensional scalar nonlinear problems, let alone vectorial / tensorial ones!

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14 Sep 2014 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace wu

20 Dec 2013 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace hossein

very good

29 Oct 2011 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace Amdad

GREAT

07 Aug 2011 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace Edward Grace

As defined the example model for pulse propagation will work in normalised units. I strongly recommend reading the example alongside the cited section of Agrawal's "Nonlinear Fiber Optics".

07 Jul 2011 GAFFE A toolbox for solving evolutionary nonlinear PDEs This toolbox implements the well known split-step Fourier technique for solving nonlinear PDEs. Author: Edward Grace Dong-sig Shin

It's exactly what I find toolbox. But I don't know where I should input parameters like pulse energy and duration.

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