Ultra-Compact Band-Pass and Band-Stop Tunable Filters Based on Loop-Cascaded Nanobeam Structure
- 24 August 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (19), 1109-1112
- https://doi.org/10.1109/lpt.2021.3107307
Abstract
We propose an ultra-compact band-pass and bandstop filter with bandwidth tunability based on the loop-cascaded nanobeam structure in simulation, with a small coupling region of 41 × 1 μm2. It features low insertion loss, large bandwidth tunable range and high sidelobe suppression ratio. By two-stage cascading, the bandwidth of the band-pass filter can be adjusted in the range of 6 nm-24 nm. We also experimentally demonstrate the loop-cascaded nanobeam band-pass and band-stop filter with a coupling region of only 17.5 × 1 μm2.Keywords
Funding Information
- National Key Research and Development Program of China (2019YFB2203104)
- Natural Science Foundation of China (61805137, 61835008)
- Natural Science Foundation of Shanghai (19ZR1475400)
- Open Project Program of Wuhan National Laboratory for Optoelectronics (2018WNLOKF012)
This publication has 13 references indexed in Scilit:
- Ultra compact Bragg grating devices with broadband selectivityOptics Letters, 2020
- On-chip programmable pulse processor employing cascaded MZI-MRR structureFrontiers of Optoelectronics, 2018
- Silicon optical filter with transmission peaks in wide stopband obtained by anti-symmetric photonic crystal with defect in multimode waveguidesOptics Express, 2018
- Broadband tunable filter based on the loop of multimode Bragg gratingOptics Express, 2018
- Two-period contra-directional grating assisted couplerOptics Express, 2016
- Ultra-compact, broadband tunable optical bandstop filters based on a multimode one-dimensional photonic crystal waveguideOptics Express, 2016
- Widely bandwidth-tunable silicon filter with an unlimited free-spectral rangeOptics Letters, 2015
- Silicon photonic devices and integrated circuitsNanophotonics, 2014
- Cascaded Mach-Zehnder wavelength filters in silicon photonics for low loss and flat pass-band WDM (de-)multiplexingOptics Express, 2013
- Silicon mode (de)multiplexer enabling high capacity photonic networks-on-chip with a single-wavelength-carrier lightOptics Letters, 2013