What is OMA | Optical Modulation Amplitude

This page describes OMA (Optical Modulation Amplitude) definition used in optical domain. It also mentions OMA (Optical Modulation Amplitude) formula or equation.

• The term OMA refers to difference in two power levels in optical domain for the optical signal generated by laser source. This is expressed as follows.
• OMA i.e. Optical Modulation Amplitude is usually specified as peak to peak value in units of mW.

stressed eye diagram and its parameters

The figure-1 depicts OMA in a stressed eye diagram of an optical signal.

OMA (Optical Modulation Amplitude) Formula or Equation

The Optical Modulation Amplitude (OMA) can be expressed either using equation-1 or equation-2.

OMA,Optical Modulation Amplitude,formula,equation

Where, Pav is average power where as re is extinction ratio of optical signal.
➤Pav = (P1 + P0)/2
➤re = P1/P0

➤Here P1 indicates power level when optical light source is in ON condition.
➤P0 indicates power level when optical light source is in OFF condition.

What is difference between or comparison between

Following links mention difference or comparison between various equipments and terms:
comparison between SPI and I2C
difference between PXI and PCI
Microscope vs Telescope
Amplitude Modulation vs Angle Modulation
difference between modem and router
Air Fuel Ratio Sensor vs O2 Sensor
Radiometer vs Spectrometer vs Spectroradiometer
Clamp meter vs digital multimeter
Colorimeter vs Spectrophotometer
difference between Prism and Grating
difference between Venturi meter and Orifice meter
difference between Lux and Lumens