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.
Original language | English |
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Pages (from-to) | 408-410 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 26 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2014 |