A COSINE S BEND LINEAR HYBRID JUNCTION DIGITAL OPTICAL SWITCH WITH VARIABLE ATTENUATOR

摘要

THE PRESENT INVENTION RELATES TO A COSINE S BEND LINEAR HYBRID JUNCTION OPTICAL SWITCH WITH VARIABLE ATTENUATOR WHEREIN A SWITCHING SECTION COMPRISES OF A COSINE S BEND BRANCH AND LINEAR BRANCHES IS PROVIDED AND WHEREIN THE COSINE S BEND IS CONNECTED TO LINEAR BRANCHES ARE USED TO FORM A Y-BRANCH AND WHEREIN A WAVEGUIDE IS DETERMINED TO BE BURIED SQUARE WAVEGUIDE WITH A 7x7 ?M² CROSS SECTION AND WHEREIN THE REFRACTIVE INDEX OF CORE AND CLADDINGS ARE 1.464 AND 1.45, RESPECTIVELY AND WHEREIN LINEAR WAVEGUIDE LENGTH IS 2.4 MM. THE INNOVATION ACCORDING TO THE PRESENT INVENTION IS THAT AT LEAST TWO PARABOLIC HEATERS (15, 16) WERE USED TO ACCOMPLISH SWITCHING FUNCTION BY HEATING THE WAVEGUIDES.