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We demonstrate a compact and broadband 1 × 4 optical switch based on W2 photonic crystal waveguides (PCWs). The footprint of the W2 PCW is only 17.6 μm × 8 μm. An operation bandwidth of 15 nm ± 1 nm is implemented with an extinction ratio over 15 dB in each channel. By introducing the thermal insulation trench, the tuning efficiency is enhanced at least 77% in experiment. The experimental results...
Broadband 1×4 thermo-optic switch is demonstrated based on four W2 photonic crystal waveguides with footprint of 17.6 µm×8 µm. Extinction ratio larger than 15dB is obtained over the bandwidth of 15±1 nm in each channel.
A compact thermo-optic switch based on the cutoff effect of slow-light mode of a tapered W1 photonic crystal waveguide (PCW) is demonstrated with an integrated microheater. Due to the low-group-index taper, the coupling loss of the slow-light PCW is reduced, and a high switching extinction ratio (ER) is attained. Moreover, three types of microheaters are evaluated for the power consumptions, heating...
Thermo-optic switch based on W1 photonic crystal waveguide is demonstrated, high extinction ratio of 23.5 dB has been experimentally achieved under a switching power as low as 8.9 mW while the device is only 16.8-μm-long.
Broadband (18 nm) switching functionality is realized by an ultra-compact (8 μm×17 μm) W2 photonic crystal waveguide with integrated microheater on the surface. Extinction ratio larger than 15 dB is obtained over the entire bandwidth.
Thermo-optic switch based on double-slot photonic crystal waveguide is demonstrated, high extinction ratio of 17 dB has been experimentally achieved under a switching power as low as 9.2 mW while the device is only 16-μm-long.
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