Publisher DOI: 10.1364/PRJ.4.000126
Title: Photonic integrated circuit components based on amorphous silicon-on-insulator technology
Language: English
Authors: Lipka, Timo 
Moldenhauer, Lennart 
Müller, Jörg 
Trieu, Hoc Khiem 
Issue Date: 11-May-2016
Publisher: OSA
Source: Photonics Research 3 (4): 126-134 (2016-06-01)
Journal or Series Name: Photonics research 
Abstract (english): We present integrated-optic building blocks and functional photonic devices based on amorphous silicon-on-insulator technology. Efficient deep-etched fiber-to-chip grating couplers, low-loss single-mode photonic wire waveguides, and compact power splitters are presented. Based on the sub-μm photonic wires, 2 × 2 Mach-Zehnder interferometers and add/drop microring resonators (MRRs) with low device footprints and high finesse up to 200 were realized and studied. Compact polarization rotators and splitters with ≥10 dB polarization extinction ratio were fabricated for the polarization management on-chip. The tuning and trimming capabilities of the material platform are demonstrated with efficient microheaters and a permanent device trimming method, which enabled the realization of energy-efficient photonic circuits. Wavelength multiplexers in the form of cascaded filter banks and 4 × 4 routers based on MRR switches are presented. Fabrication imperfections were analyzed and permanently corrected by an accurate laser-trimming method, thus enabling eight-channel multiplexers with record low metrics of sub-mW static power consumption and ≤1°C temperature overhead. The high quality of the functional devices, the high tuning efficiency, and the excellent trimming capabilities demonstrate the potential to realize low-cost, densely integrated, and ultralow-power 3D-stacked photonic circuits on top of CMOS microelectronics.
ISSN: 2327-9125
Institute: Mikrosystemtechnik E-7 
Type: (wissenschaftlicher) Artikel
Funded by: Supported by DFG and TUHH in the funding programme Open Access Publishing.
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