Yb-doped fiber

class YbDopedFiber(length=0, core_radius=0, ion_number_density=0, background_loss=0, core_na=0)

YbDopedFiber is a convenience class for Yb-doped single-mode fiber that uses the default spectroscopic data for Yb-ions.

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

Parameters

• length (float) – Fiber length

• core_radius (float) – Core radius

• ion_number_density (float) – Number density of the dopant ions (1/m^3)

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

• core_na (float) – Numerical aperture of the core

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

classmethod from_cross_section_files(length, absorption_cs_file=None, emission_cs_file=None, core_radius=0, upper_state_lifetime=0, ion_number_density=0, background_loss=0, core_na=0)

Parameters

• length (float) – Fiber length

• absorption_cs_file (str) – Name of the file containing absorption cross-section data

• emission_cs_file (str) – Name of the file containing emission cross-section data

• core_radius (float) – Core radius

• upper_state_lifetime (float) – Lifetime of the excited state

• ion_number_density (float) – Number density of the dopant ions (1/m^3)

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

• core_na (float) – Numerical aperture of the core

saturation_parameter()

Returns the constant saturation parameter zeta defined in the Giles model.