Reflectance VS Wavelength Curve

[Shanjida Islam]

Hey,
I am using optiFDTD to design a SPR-based biosensor with multilayers and gratings. I obtained the reflected power vs. wavelength curve, which shows negative power. I think this is because of the direction of power flow, but I find no paper with a negative reflected power spectrum. Is it alright to attach my results as they are, as I am currently working on a paper related to my research?
Is there a way to obtain the reflectance vs. angle curve from optiFDTD?
Thank you.

• This topic was modified 5 months, 1 week ago by Scott Newman.

[Scott Newman]

Shanjida,

The negative purely indicates that the direction of the power is along the negative direction along the normal of the observation area. In the case of an XY observation area power moving along +z (from left to right in the standard layout window) is positive and power moving along the -z (from right to left) is negative. The charts that show this have an check box which will show the absolute value which is typically what is used in publications provided direction is indicated through the figure caption.

Scott

[Shanjida Islam]

Thank you Scott.

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