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We represent the polarization dependent loss of graphene placed directly onto silicon waveguides. Graphene introduces 7.7 dB higher losses for TM mode in a 150 µm long waveguide, which is sufficient for an integrated polarizer.
We describe a platform for mid-infrared silicon photonic devices based on focusing subwavelength grating coupler (SWG) and suspended membrane waveguides. The focusing SWG was designed for 2.75 μm wavelength. 24.7% coupling efficiency was measured. The suspended membrane waveguide was optimized in terms of holes size and etch depth.
Theoretical and experimental results of mid-infrared (mid-IR) gratings for coupling between transverse-electric (TE)/transverse-magnetic (TM) mode silicon-on-sapphire (SOS) waveguides and zirconium, barium, lanthanum, aluminum, and sodium fluoride (ZBLAN) fibers are presented. The shallow-etched uniform grating, full-etched subwavelength grating, and apodized grating are analyzed theoretically. TE...
A silicon-on-sapphire (SOS) micro-ring resonator was fabricated and characterized at 2.75µm by thermal tuning. The measured extinction ratio in the drop port is about 10dB and the Q factor is about 2000.
The capacitive power transfer (CPT) system and inductively power transfer (IPT) system are the two typical wireless power transfer systems. Based on the power transmission characteristics, the power transfer capacity of the two wireless power transfer system was analyzed. Firstly, the maximum power transfer capacity and its existing condition of the two types of wireless power transfer system were...
We propose and experimentally demonstrate a novel subwavelength grating coupler on SOI for coupling between fiber and nanophotonic waveguide with a wide bandwidth. 80nm 1dB-bandwidth was experimentally demonstrated.
We present a compact focusing coupler between silicon waveguide and vertical optical fiber suitable for low cost packaging, which is 18 mum times 30 mum in size. 33% coupling efficiency with >45 nm 3 dB bandwidth was experimentally obtained.
Experimental results of grating couplers composed of holes arrays that fabricated at the same time as waveguides were presented. This design does not require additional process for couplers fabrication, yet achieved 30% coupling efficiency.
A novel integrated waveguide grating is proposed for the dual functions of coupling light to fiber and as a variable split ratio splitter/combiner. A Mach-Zehnder delay-interferometer was fabricated using the grating coupler/splitter/combiner for DPSK demodulation.
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