We report on a device capable of generating long optical path differences through the use of a combination of a tunable TE–TM converter and a phase shifter. The values that are achievable (~4 mm) are approximately three times higher than those obtained with integrated imbalanced Mach–Zehnder interferometers, with the additional advantage of low optical losses.
© 1996 Optical Society of America
Original Manuscript: August 30, 1995
Published: March 15, 1996
Gadang Ramantoko, Jean-Pierre Goedgebuer, and Henri Porte, "Synthesis of large optical delays by mode coupling in electro-optically tunable TE–TM mode converters," Opt. Lett. 21, 372-374 (1996)