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Low-Loss Tapered Waveguides for Cascaded Trapping of Microparticles

Recently, near-field optical tweezers integrated on a chip based on silicon on insulator (SOI) have attracted more attention and are promising for biological and chemical analyses. Here we propose a low-loss Si waveguide tapered from 800 nm width to 200 nm over 4 μm, then back to 800 nm again, with a high intensity gradient in the electric field to trap microparticles whose diameters vary from 1 μm to 5 μm. The high transmittance allows for cascading the traps along the direction of light propagation. Optical forces in all three dimensions are analyzed around a high-stiffness potential well obtained. Moreover, a dynamic model is applied to analyze the motion processes of microparticles.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.3 February 1 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 728-734

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

MICROPARTICLES
TAPERED WAVEGUIDE
OPTICAL TRAPPING
CASCADED TRAPS
TRAPPING DYNAMICS

Info Detail Spesifik

10.1109/JLT.2021.3120588

Pernyataan Tanggungjawab

Zhi Cheng, Xin Tong, Lin Zhang

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