Parasitic reflections can deteriorate the performance of a photonic integrated circuit. This is especially true in circuits containing amplifiers, but even in passive circuits, small reflections can already have a strong influence on circuit performance. It is known that strong reflections can be present when using a 2 × 1 multimode interference coupler (MMI) as a combiner. We investigate methods for reducing these spurious reflections in a generic integration technology. We present a novel MMI shape whose measurements show reduced reflections by 17.5 dB.

Multimode Interference Couplers With Reduced Parasitic Reflections

MELATI, DANIELE;MELLONI, ANDREA IVANO;
2014-01-01

Abstract

Parasitic reflections can deteriorate the performance of a photonic integrated circuit. This is especially true in circuits containing amplifiers, but even in passive circuits, small reflections can already have a strong influence on circuit performance. It is known that strong reflections can be present when using a 2 × 1 multimode interference coupler (MMI) as a combiner. We investigate methods for reducing these spurious reflections in a generic integration technology. We present a novel MMI shape whose measurements show reduced reflections by 17.5 dB.
integrated optics; light interference; light reflection; optical couplers; optical design techniques; optical waveguides; MMI shape; amplifiers; generic integration technology; multimode interference couplers; passive circuits; photonic integrated circuit; reduced parasitic reflections; Couplers; Interference; Layout; Performance evaluation; Photonics; Shape
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/863349
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