Tilted Fiber Bragg Grating

Tilted fiber Bragg grating is an advanced passive fiber optic device, whose internal refractive index modulation grating plane forms a specific angle (tilt angle) with the fiber axis. TFBG continuously couples the fundamental mode energy transmitted in the core to a series of different order cladding modes through its tilted refractive index modulation structure, while satisfying the phase matching condition.