Abstract
The unusual properties of Fiber Bragg Gratings in microstructured fibers deliver significantly improved performance in some respect to traditional fibers. They are also superior in one or few characteristics and eventually unveil the novel properties of fiber Bragg grating sensors, leading to the superiority of implementations and original applications, which are briefly discussed in this chapter. Moreover, a very promising functionality of doped core microstructured fibers in perspective of material and geometrical guiding mechanism competition is clarified and encouraged. Furthermore, such fibers are greatly advantageous for Fiber Bragg Grating inscription and instead of scarifying important properties they pave the way to novel applications fulfilling the industrial requirements. Additionally, very interesting and hopeful research and development of pure silica microstructured Fiber Bragg Gratings are presented as well.