Passive fiber

class PassiveFiber(length=0, core_radius=0, background_loss=0, core_na=0)

PassiveFiber describes a step-index single-mode fiber with no dopant ions. It extends the FiberBase class by stating that there is no emission or absorption by ions. The only possible gain comes of stimulated Raman scattering.

__init__(length=0, core_radius=0, background_loss=0, core_na=0)

Parameters

• length (float) – Fiber length

• core_radius (float) – Core radius

• background_loss (float) – Linear loss of the core (1/m, NOT in dB/m)

• core_na (float) – Numerical aperture of the core

get_channel_emission_cross_section(freq, frequency_bandwidth)

Passive fiber has no gain.

get_channel_absorption_cross_section(freq, frequency_bandwidth)

Passive fiber has no absorption by dopant ions.

core_area()

Returns the core area of the fiber defined as pi*r**2, where r is the core radius.

Returns

Core area

Return type

float