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Authors: J. Brouckaert, G. Roelkens, S. Selvaraja, W. Bogaerts, P. Dumon, S. Verstuyft, Z. Yu, D. Van Thourhout, R. Baets
Title: Miniature Integrated Spectrometer Fabricated on a Silicon-on-Insulator Substrate
Format: International Conference Proceedings
Publication date: 11/2008
Journal/Conference/Book: Leos Annual Meeting
Volume(Issue): p.MF3
Location: Newport Beach, United States
DOI: 10.1109/leos.2008.4688485
Citations: 5 ( - last update: 14/7/2024)
4 (OpenCitations - last update: 3/5/2024)
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We demonstrate a compact and cost-effective 30-channel integrated spectrometer fabricated on a nanophotonic silicon-on-insulator (SOI) platform. The spectrometer consists of a planar concave grating (PCG) demultiplexer with heterogeneously integrated III-V photodetectors. The device has a resolution of 3.2nm and a small footprint of ~2mm2. The photodetectors have a dark current of ~3nA at 5V bias and a responsivity of 1A/W.
The on-chip loss for the central PCG channels is 3dB,
resulting in an on-chip responsivity of 0.5A/W.

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