Hi Almas
To simulate the effect of an air gap on the power intensity of an incident pulse in a fiber optic sensor in MATLAB, you will need to model the relationship between the air gap (displacement), the power intensity of the transmitted light, and any other variables of interest. This can involve calculating the transmission efficiency based on the gap and the characteristics of the light (e.g., wavelength, angle of incidence).
Here's a simplified approach to get you started:
1: Define the Relationship
First, define the theoretical or empirical relationship between the air gap and the power intensity. This could be based on Fresnel equations for reflection and transmission at interfaces, or more specific models tailored to fiber optics. For simplicity, let's assume you have a direct relationship where the intensity decreases with the square of the gap increase, and consider the effect of wavelength as well.
2: Set Up Your Variables
- Let gap be an array representing different air gap distances you want to simulate.
- Let wavelength be an array representing different wavelengths of the incident light pulse.
- Assume an initial power intensity I0 for when there is no gap.
3: Calculate Power Intensity
For each combination of gap and wavelength, calculate the resulting power intensity. You might use a model where the intensity decreases with the increase of the gap and changes with wavelength.
4: Plotting in 3D
Use MATLAB’s plotting functions to create a 3D plot. meshgrid can be used to create matrices for the gap and wavelength variables, and surf or mesh can plot these against the calculated intensity.
I hope this helped you to get started.
