The potential of switching wavelengths by using a directional coupler has been explored. A dual-wavelength (λ = 1300–1650 nm) directional coupler multiplexer–demultiplexer has been realized by using the annealed-proton-exchange process in LiNbO3. The interaction length of the coupler has been accurately tuned to operate at a desired wavelength by annealing and reannealing the substrate until the desired coupling length is achieved.
© 1993 Optical Society of America
Original Manuscript: October 16, 1992
Published: March 15, 1993
Indra Januar and Alan R. Mickelson, "Dual-wavelength (λ = 1300–1650 nm) directional coupler multiplexer–demultiplexer by the annealed-proton-exchange process in LiNbO3," Opt. Lett. 18, 417-419 (1993)