G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/14 (2006.01) G02B 6/10 (2006.01) G02B 6/12 (2006.01) G02B 6/13 (2006.01) G02F 1/125 (2006.01) G02F 1/335 (2006.01) H01P 3/00 (2006.01) H01P 11/00 (2006.01)
Patent
CA 2273601
The invention relates to optical birefringent waveguides, acousto-optical devices using such optical waveguides and an acoustic waveguide formed in a substrate as well as a manufacturing method therefore. The optical waveguides of the invention exhibit a small birefringent variation with respect to a change of waveguide parameters, if the fundamental mode propagating in the optical waveguide has a propagation constant near to the cut-off condition. The optical waveguide dimensions are typically chosen such that the cut-off wavelength of the waveguide is below 1650 nm for an operating wavelength in the window between 1530 nm and 1565 nm. The acousto-optic mode converter using such optical waveguides have a superior conversion characteristic over the conversion frequency with reduced side lobes. Therefore, using the thin and narrow optical waveguides of the invention, a superior performance of the acousto-optical devices using such an optical waveguide can be obtained.
Bosso Sergio
Herrmann Harald
Morasca Salvatore
Schmid Steffen
Corning O.t.i. S.p.a.
Kirby Eades Gale Baker
Pirelli Cavi E. Sistemi S.p.a.
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