A Compact All-Silicon Temperature Insensitive Filter for WDM and Bio-Sensing Applications

作者：Dwivedi Sarvagya^*; D' heer Herbert; Bogaerts Wim

来源：IEEE Photonics Technology Letters, 2013, 25(22): 2167-2170.

DOI：10.1109/LPT.2013.2282715

• Silicon photonics
• wavelength filtering devices
• athermal
• polarization selective devices
• bio-sensing

We propose a compact, temperature-insensitive, and all-silicon Mach-Zehnder interferometer filter that uses the polarization-rotating asymmetrical directional couplers. Temperature sensitivity of the filter is %26lt;8 pm/K for a wavelength range of 30 nm. The device achieves a reduced footprint by making use of different polarizations, which is made possible by the asymmetric directional couplers that act both as a splitter/combiner and as a polarization rotator. Simulation of the device shows that it can also be useful for gas sensing and bio-sensing applications with three times larger response to cladding changes while keeping a thermally robust behavior.

• 出版日期2013-11-15