How can I calculate the fiber bragg reflectivity in Q-switched fiber lasers?

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Chyong-Hua Chen

If you knew the refractive index variation of the fiber bragg grating, you can obtain its reflectivity by using transfer matrix method.

Mahdi Zavvari

It is known but in order to achieve Q-switching in fiber lasers, the refractive indices of grating is changed by a piezo modulator (PZT). My concern is the change in reflectivity of one side of fibre laser FBG while the PZT is applied to other side. Thanks for your attention dear Chyong

Thanks alot dear Vincent, I'll try.