One of the many things you will work with during your mathematics career is the optical extinction ratio. Learn about the optical extinction ratio with help from a mathematics educator in this free video clip.

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One of the many things you will work with during your mathematics career is the optical extinction ratio. Learn about the optical extinction ratio with help from a mathematics educator in this free video clip.

Part of the Video Series: Math Tips

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Hi I'm Jimmy Chang and we're here to talk about an optical extinction ratio. Now the optical extinction ratio is really dependent on noise and power and the ratio is actually a pretty straightforward ratio that looks like this. So the optical extinction ratio is denoted by r sub e and it's equal to P1/P0. Now what P1 is the level of optical power generated when the light source is on and P0 or if you want to say P Null that's fine too is the level of optical power generated when the light source is off. So it's really a ratio of 2 power levels depending on the power of the source itself. So I'm Jimmy Chang and that's a brief introduction as the optical extinction ratio.