Numerical investigation of polarization insensitive two-mode division (De)multiplexer based on an asymmetric directional coupler
We propose a polarization insensitive two-mode division (de)multiplexer based on a silicon-on-insulator platform operating with a broadband, low insertion and scattering loss, and small crosstalk. By using an asymmetric directional coupler, two-mode (de)multiplexing functions for both polarization T...
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| Veröffentlicht in: | Photonics and nanostructures 2017-02, Vol.23, p.50-57 |
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| container_title | Photonics and nanostructures |
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| creator | Truong, Cao Dung Trinh, M. Tuan Dang, Hoai Bac Nguyen, Van Tho |
| description | We propose a polarization insensitive two-mode division (de)multiplexer based on a silicon-on-insulator platform operating with a broadband, low insertion and scattering loss, and small crosstalk. By using an asymmetric directional coupler, two-mode (de)multiplexing functions for both polarization TE and TM states can be realized by the numerical simulation. Simulated results using a three dimensional beam propagation method (3D-BPM) incorporated with an effective index method (EIM) show high performance of the device with an operation efficiency above 81.2% (i.e., insertion loss is less than 0.9dB) in the range of ±5nm around the central wavelength of 1550nm. Fabrication tolerances also have proved suitability to current manufacture technologies for the planar waveguides. Besides a low scattering loss of the sidewall roughness and a little influence of dispersion, a small footprint can bring the device to applications of high bitrate and compact on-chip silicon photonic integrated circuits. |
| doi_str_mv | 10.1016/j.photonics.2016.12.001 |
| format | Article |
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| ispartof | Photonics and nanostructures, 2017-02, Vol.23, p.50-57 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Asymmetric directional coupler Bandwidths Beam propagation method (BPM) Beams (radiation) Broadband Computer simulation Crosstalk Directional couplers Division Effective index method (EIM) Insertion loss Integrated circuits Mode (de)multiplexer Multiplexers Multiplexing Photonics Planar waveguides Polarization Scattering Silicon Silicon on insulator (SOI) Tolerances Waveguide |
| title | Numerical investigation of polarization insensitive two-mode division (De)multiplexer based on an asymmetric directional coupler |
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