A narrow-bandpass filter with a 15-dB signal-to-noise level is demonstrated using Bragg-grating assisted mode conversion within a tapered waveguide. The potential effects of such filters in wavelength-division multiplexing systems are discussed.
© 1998 Optical Society of America
J. Canning and D. Moss, "Grating-based transmission bandpass filters using dispersion-matched mode conversion," Opt. Lett. 23, 174-176 (1998)