Yb-doped double-clad fiber¶
- class YbDopedDoubleCladFiber(length, core_radius, ion_number_density, background_loss, core_na, ratio_of_core_and_cladding_diameters)¶
YbDopedDoubleCladFiber is a convenience class for Yb-doped double-clad fiber that uses the default spectroscopic data for Yb-ions.
- __init__(length, core_radius, ion_number_density, background_loss, core_na, ratio_of_core_and_cladding_diameters)¶
- 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
ratio_of_core_and_cladding_diameters (float) – Core diameter divided by cladding diameter
- 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=0, 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, ratio_of_core_and_cladding_diameters=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
ratio_of_core_and_cladding_diameters (float) – Core diameter divided by cladding diameter
- pump_cladding_radius()¶
Returns the radius of the fiber’s pump cladding.
- pump_to_core_overlap()¶
Returns the overlap between the core and the pump beams, which equals to the ratio of core and cladding area.
- saturation_parameter()¶
Returns the constant saturation parameter zeta defined in the Giles model.