The resonance equation of the sampled fiber Bragg gratings is derived through the Fourier′s transform and the coupled-mode theory, which determine the wavelengths of the resonance peaks.

利用傅里叶变换和耦合模理论得到了取样布拉格光纤光栅的谐振方程，确定了其多谐振峰的位置。

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MacColl's other hits include a cover of Billy Bragg's song A New England, and a version of The Kinks' track Days.

BBC: Kirsty MacColl

Keswick's Theatre by the Lake is staging Melvyn Bragg's "Maid of Buttermere" at present, and I was delighted to be in the audience last week, for the production is a tour de force.

BBC: Cumberland wrestling round-up

Politics has always been an important part of Bragg's approach to music and he took his lead from Joe Strummer.

BBC: Remembering Joe Strummer 10 years on