Method of reducing insertion loss in a transition region between a plurality of input or output waveguides to a free space coupler region

Method of reducing insertion loss in a transition region between a plurality of input or output waveguides to a free space coupler region

A method for reducing insertion loss in a transition region between a plurality of input or output waveguides to a free space coupler region in a photonic integrated circuit (PIC) includes the steps of forming a passivation layer over the waveguides and region and forming the passivation overlayer s...

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Bibliographische Detailangaben
Hauptverfasser: JOYNER CHARLES H, KISH, JR. FRED A, MISSEY MARK J, NAGARAJAN RADHAKRISHNAN L
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SEMICONDUCTOR DEVICES
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Zusammenfassung:A method for reducing insertion loss in a transition region between a plurality of input or output waveguides to a free space coupler region in a photonic integrated circuit (PIC) includes the steps of forming a passivation layer over the waveguides and region and forming the passivation overlayer such that it monotonically increases in thickness through the transition region to the free space coupler region.