We evaluate the mode-coupling mechanisms for short- and long-period gratings based on the propagation constant differences between the various spatial modes of the optical fiber. The properties of these photoinduced devices such as strain and temperature response and spectral behavior are also reviewed. Short-period fiber gratings have applications to adding and dropping WDM channels, flattening the grain spectrum of optical amplifiers and compensating chromatic dispersion. The applications of long-period gratings to gain equalization, ASE suppression and sensor are summarized.

Date Published: 25 September 2001
PDF: 7 pages
Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); doi: 10.1117/12.441289

Published in SPIE Proceedings Vol. 4417:
Photonics 2000: International Conference on Fiber Optics and Photonics
S. K. Lahiri; Ranjan Gangopadhyay; Asit K. Datta; Samit K. Ray; B. K. Mathur; S. Das, Editor(s)