[9a-N302-1~11] 3.13 Silicon photonics, Photonics-electronics convergence, Optical control

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N302-7] Design of Wavelength and Polarization Multiplexer/Demultiplexer using Multi-Reflective Metasurface

〇Haruki Koshiba¹, Takahiro Suganuma¹, Yusuke Tsubai¹, Chun Ren¹, Takuo Tanemura¹ (1.The Univ. of Tokyo)

Keywords:

dielectric metasurface,optical communication,wavelength division multiplexing

We propose a wavelength and polarization multiplexing/demultiplexing device for compact optical transceivers. The device employs a multiple-reflection architecture in which three dielectric metasurfaces are sandwiched between quartz substrates and a reflective layer. By providing appropriate diffraction while performing wavelength and polarization dependent wavefront transformations at each metasurface, the individual components are separated. The structure is optimized for optical signals multiplexed with four wavelength channels in the 1550 nm band at 20 nm intervals and X/Y linear polarizations. Numerical simulations demonstrate the effectiveness of the proposed structure, achieving a coupling loss of 0.4 dB and a low crosstalk of −27 dB.