AI Article Synopsis
- Researchers have developed a low-power 2×2 thermo-optic switch using an X-junction design with a silicon oxynitride (SiON) core and polymer cladding.
- The innovative design incorporates a slot in the center of the X-junction, optimizing the different thermo-optic properties of SiON and the polymer for better heat efficiency.
- The experimental switch demonstrates impressive performance with an extinction ratio above 15.34 dB, low switching power of about 59.6 mW, fast switching times (1.42 ms rise and 0.85 ms fall), and minimal insertion and polarization-dependent losses.
Article Abstract
We propose and demonstrate a low-power 2×2 total internal reflection thermo-optic switch based on an X-junction configuration formed with a silicon oxynitride (SiON) core and polymer cladding. Unlike X-junctions reported thus far, our proposed configuration features a slot formed on the center of the X-junction and filled with polymer cladding. With such a configuration, the opposite thermo-optic characteristics of SiON and polymer and, hence, heat utilization efficiency can be fully utilized. Our fabricated proof-of-principle switch shows extinction ratios of larger than 15.34 dB and switching powers of less than ∼59.6 mW. The rise time and fall time of switching are 1.42 and 0.85 ms, respectively. The insertion losses are less than 10.6 dB for all channels, and the polarization-dependent loss is ∼0.3 dB.
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| http://dx.doi.org/10.1364/AO.57.009809 | DOI Listing |
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