Ultra-Broadband Silicon-Wire Polarization Beam Combiner/Splitter Based on a Wavelength Insensitive Coupler With a Point-Symmetrical Configuration

Ultra-Broadband Silicon-Wire Polarization Beam Combiner/Splitter Based on a Wavelength Insensitive Coupler With a Point-Symmetrical Configuration

An ultrabroadband silicon wire polarization beam combiner/splitter (PBCS) based on a wavelength-insensitive coupler is proposed. The proposed PBCS consists of three identical directional couplers and two identical delay lines. We design the PBCS using the 3-D finite element method. Numerical simulat...

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Veröffentlicht in:IEEE photonics journal 2014-02, Vol.6 (1), p.1-8
Hauptverfasser: Uematsu, Takui, Kitayama, Tetsuya, Ishizaka, Yuhei, Saitoh, Kunimasa
Format: Artikel
Sprache:eng
Schlagworte:
Beam combiners
Computer simulation
Couplers
Couplings
Delay lines
Extinction ratio
finite element methods
Joining
Mathematical analysis
Optical waveguides
Polarization
Power generation
Silicon
Silicon nanophotonics
Three dimensional
waveguide devices
Wavelengths
Wire
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Beschreibung
Zusammenfassung:An ultrabroadband silicon wire polarization beam combiner/splitter (PBCS) based on a wavelength-insensitive coupler is proposed. The proposed PBCS consists of three identical directional couplers and two identical delay lines. We design the PBCS using the 3-D finite element method. Numerical simulations show that the proposed PBCS can achieve the transmittance of more than 90% over a wide wavelength range from 1450 to 1650 nm for both TE and TM polarized modes.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2014.2302808