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

Author

Uematsu, Takui ; Kitayama, T. ; Ishizaka, Yuhei ; Saitoh, Kunimasa

Author_Institution

Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan

Volume

6

Issue

1

fYear

2014

fDate

Feb. 2014

Firstpage

1

Lastpage

8

Abstract

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.

Keywords

nanophotonics; optical beam splitters; optical couplers; optical polarisers; optical waveguides; silicon; ultra wideband technology; point-symmetrical configuration; ultrabroadband silicon-wire polarization beam combiner/splitter; wavelength 1450 nm to 1650 nm; wavelength insensitive coupler; wavelength-insensitive coupler; Couplers; Couplings; Delay lines; Extinction ratio; Optical waveguides; Power generation; Silicon; Silicon nanophotonics; finite element methods; waveguide devices;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2302808

Filename

6725628