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May 10, 2020 13:33
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FOT – Lab4 zdalne – Zadanie 1 wykresy k(omega), a, M(Omega)
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import numpy as np | |
from matplotlib import pyplot as plt | |
K0 = 1 # [1] | |
DELTA_OMEGA_D = 1500 # [MHz] | |
L = 0.9 # [m] | |
DELTA_OMEGA = (3e8 * 1e-6)/(2 * L) # [MHz] | |
A = 0.45 # [1] | |
OMEGA_PR = np.sqrt(-np.log(A)) * 0.6 * DELTA_OMEGA_D # [MHz] | |
DELTA_L = 0.3 # [µm] | |
LAMBDA = 0.6328 # [µm] | |
DELTA_F = (DELTA_OMEGA * DELTA_L)/(LAMBDA/2) | |
def dopplerowska_krzywa_wzm(omega: float) -> float: | |
return K0 * np.exp((-np.power(omega, 2))/np.power(0.6*DELTA_OMEGA_D, 2)) | |
def skladnik_struktury_modow(omega: float, n: int) -> float: | |
return 1/(1 + np.power((omega - n * DELTA_OMEGA_D - DELTA_F)/2, 2)) | |
def struktura_modow(omega: float) -> float: | |
n = np.arange(-15, 15, 1) | |
return np.sum([skladnik_struktury_modow(omega, _n) for _n in n]) | |
def amplituda_modow(omega: float) -> float: | |
return A + (dopplerowska_krzywa_wzm(omega) - A) * struktura_modow(omega) | |
if __name__ == "__main__": | |
zakres_omega = np.arange(-1200, 1200, 1) | |
zakres_OMEGA = np.arange(-OMEGA_PR, OMEGA_PR, OMEGA_PR/5000) | |
wzmocnienie = [dopplerowska_krzywa_wzm(omega) | |
for omega in zakres_omega] | |
poziom_strat = np.full(zakres_omega.shape, A) | |
amplituda_modow_arr = [amplituda_modow(_omega) | |
for _omega in zakres_OMEGA] | |
plt.plot(zakres_omega, wzmocnienie) | |
plt.plot(zakres_omega, poziom_strat) | |
plt.plot(zakres_OMEGA, amplituda_modow_arr) | |
plt.xlabel(r"$\omega$ [MHz]") | |
plt.legend(["Wzmocnienie", "Poziom strat", "Amplituda modów"]) | |
plt.savefig("zad_1.png") |
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