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use scipy.constants

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James Powell
2018-03-20 22:44:17 -04:00
parent a6265c1b8d
commit c9ece6ad7c
1 changed files with 5 additions and 7 deletions
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12
gnpy/core/utils.py
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@@ -13,6 +13,7 @@ import json
import numpy as np import numpy as np
from numpy import pi, cos, sqrt, log10 from numpy import pi, cos, sqrt, log10
from scipy import constants
def load_json(filename): def load_json(filename):
@@ -30,7 +31,7 @@ def c():
""" """
Returns the speed of light in meters per second Returns the speed of light in meters per second
""" """
return 299792458.0 return constants.c
def itufs(spacing, startf=191.35, stopf=196.10): def itufs(spacing, startf=191.35, stopf=196.10):
@@ -53,7 +54,7 @@ def h():
""" """
Returns plank's constant in J*s Returns plank's constant in J*s
""" """
return 6.62607004e-34 return constants.h
def lin2db(value): def lin2db(value):
@@ -64,11 +65,8 @@ def db2lin(value):
return 10**(value / 10) return 10**(value / 10)
def wavelength2freq(value): wavelength2freq = constants.lambda2nu
""" Converts wavelength units to frequeuncy units. freq2wavelength = constants.nu2lambda
"""
return c() / value
def freq2wavelength(value): def freq2wavelength(value):
""" Converts frequency units to wavelength units. """ Converts frequency units to wavelength units.