ACCEPTANCE ANGLE:
It is the maximum angle of incidence at
the core of the optical fibre.so that the light can be guided through the
fibre.
Acceptance cone :
In fiber optics, the cone within which optical power may be coupled into the bound modes of an optical fiber.
Note : The acceptance cone is derived by rotating the Acceptance Angle about the fiber axis.
Critical angle :
In an optical fiber, the light travels through the core (n1,high index of refraction) by constantly reflecting from the cladding (n2,lower index of refraction) because the angle of the light is always greater than the critical angle.
Acceptance cone :
In fiber optics, the cone within which optical power may be coupled into the bound modes of an optical fiber.
Note : The acceptance cone is derived by rotating the Acceptance Angle about the fiber axis.
Critical angle :
In an optical fiber, the light travels through the core (n1,high index of refraction) by constantly reflecting from the cladding (n2,lower index of refraction) because the angle of the light is always greater than the critical angle.
FROM SNELL'S LAW
The equation (4) is the condition for acceptance angle.
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