MATLAB 计算啁啾光栅反射光谱图：不同啁啾系数的影响

%0A%2F%2F%20%E5%AE%9A%E4%B9%89%E5%B8%B8%E9%87%8F%0Alambda%20%3D%20linspace(1549,%201551,%201000)%3B%20%2F%2F%20%E6%B3%A2%E9%95%BF%E8%8C%83%E5%9B%B4%3A%5B1549%20nm,%201551%20nm%5D%0An_0%20%3D%201.45%3B%20%2F%2F%20%E5%85%89%E7%BA%A2%E6%8A%98%E5%8F%89%E7%8E%87%0ALambda%20%3D%20532e-9%3B%20%2F%2F%20%E5%96%92%E5%9B%9E%E6%9C%9F%0Ak%20%3D%202pin_0/Lambda%3B%20%2F%2F%20%E6%B3%A2%E7%9F%A2%0Ad%20%3D%20100e-6%3B%20%2F%2F%20%E5%85%89%E6%A0%8F%E9%95%BF%E5%BA%A6%0AL%20%3D%201%3B%20%2F%2F%20%E5%85%89%E6%A0%8F%E6%9C%9F%E6%95%B0%0A%0A%2F%2F%20%E5%AE%9A%E4%B9%89%E5%96%92%E5%9B%9E%E7%B3%BB%E6%95%B0%0Achirp_coefficients%20%3D%20%5B7e-9,%2010e-9,%2013e-9,%2016e-9,%2019e-9%5D%3B%0A%0A%2F%2F%20%E8BA%8F%E7%AE%97%E5%8F%8D%E5%B0%84%E7%8E%87%0Arelections%20%3D%20zeros(length(lambda),%20length(chirp_coefficients))%3B%0Afor%20i%20%3D%201%3Alength(chirp_coefficients)%0A chirp%20%3D%20chirp_coefficients(i)%3B%0A for%20j%20%3D%201%3Alength(lambda)%0A k_z%20%3D%20sqrt(k^2%20-%20(2pi/(lambda(j)%20%201e-9))^2)%3B%0A r%20%3D%20(sin(k_z%20*%20d/2)%20-%201ichirpk_zd/2)%20/%20(cos(k_z%20%20d/2)%20+%201ichirpk_z*d/2)%3B%0A reflections(j,%20i)%20%3D%20abs(r)^2%3B%0A end%0Aend%0A%0A%2F%2F%20%E7%BB%98%E5%88%B6%E5%8F%8D%E5%B0%84%E5%85%89%E8%BE%BE%E5%9B%BE%0Afigure%3B%0Aplot(lambda,%20reflections)%3B%0Axlabel('波长 nm')%3B%0Aylabel('反射率')%3B%0Atitle('啁啾光纤布拉格光栅的反射谱')%3B%0Alegend('7e-9',%20'10e-9',%20'13e-9',%20'16e-9',%20'19e-9')%3B%0Aaxis%5B1549,%201551,%200,%201%5D%3B%0A