Optical Extinction Ratio | Polarization Extinction Ratio
This page describes OER (Optical Extinction Ratio) or PER (Polarization Extinction Ratio) definition used in optical domain. It also mentions OER (Optical Extinction Ratio) or PER (Polarization Extinction Ratio) formula or equation.
Definition:
• Optical extinction ratio (re) refers to ratio of two optical power level amplitudes of digital signal.
• The signal is generated by any optical source such as laser diode.
• re = P1/P0
• It is measured in dB or percentage.
• PER (Polarization Extinction Ratio) is ratio of optical powers measured with two perpendicular polarization types such as TE and TM. TE refers to Transverse Electric and TM refers to Transverse Magnetic. PER is used to characterize optical fiber.
Optical Extinction Ratio | Polarization Extinction Ratio Formula or Equation
Following is the formula or equation of Optical Extinction Ratio or Polarization Extinction Ratio.
Where, P1 is power amplitude when light source is ON and P0 is power amplitude when light source is OFF.
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