Acta Photonica Sinica, Volume. 47, Issue 5, 523003(2018)
Particles Manipulation Based on Tunable Gradual Changed Slotted Photonic Crystal Waveguide
A tunable gradual changed Slotted Photonic Crystal Waveguide (S-PCW) was demonstrated based on subwavelength particle controller for vacuum environment. Particles can be trapped in slot structure and transported along the light transmission direction. Through thermal-optic tuning the gradual changed S-PCW, particles can be transported to the desired position. The bandgap structure and transmission characteristics of the S-PCW were analyzed, as well as the optical force with the particle. The simulation results on the power consumption of the thermal control and the temperature distribution in S-PCW show that the particle transportation in a gradual changed silicon S-PCW can be achieved through thermal-tuning the refractive index of silicon material. The calculated refractive index shift is 0.012 for position control in a 18 μm-long S-PCW with 4 nm slot width shift fron input port to output port, which corresponding to a 13.7 mW heating power. The compact device footprint shows the potential of the controller for micro manipulating applications.
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ZHAO Qiang, LIU Zi-yu. Particles Manipulation Based on Tunable Gradual Changed Slotted Photonic Crystal Waveguide[J]. Acta Photonica Sinica, 2018, 47(5): 523003
Received: Jul. 11, 2017
Accepted: --
Published Online: Sep. 7, 2018
The Author Email: Qiang ZHAO (zhaoqiang@qxslab.cn)