47 results about "Extinction ratio" patented technology

In telecommunications, extinction ratio (rₑ) is the ratio of two optical power levels of a digital signal generated by an optical source, e.g., a laser diode. The extinction ratio may be expressed as a fraction, in dB, or as a percentage. It may be given by rₑ=P₁/P₀, where P₁ is the optical power level generated when the light source is on, and P₀ is the power level generated when the light source is off.