Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask
Figure 19
(a) Cross section of ESM-12-01 fiber. (b) Transmission (gray), reflection (black), and modeled (dotted) spectra of a grating written in ESM-12-01 fiber with 1200J pulse energy 200 Hz. Total exposure time 5 minutes.