Demonstration of mode conversion using anti-symmetric waveguide Bragg gratings

Area of Science:

• Optics
• Materials Science
• Photonics

Background:

• Tilted Bragg gratings are used for mode conversion in optical devices.
• These gratings also produce unwanted reflections, increasing noise and crosstalk.

Purpose of the Study:

• To experimentally demonstrate a novel grating for two-mode waveguides.
• To achieve reflection with mode conversion exclusively.
• To improve optical device performance by reducing noise and crosstalk.

Main Methods:

• Experimental demonstration of a novel grating structure.
• Fabrication and testing in a two-mode waveguide environment.

Main Results:

• The novel grating exclusively produces reflection with mode conversion.
• Elimination of reflections without mode conversion was achieved.

Conclusions:

• The new grating design offers superior performance for optical devices.
• This technology provides a pathway to reduce noise and crosstalk in integrated photonics.