Design of ultra-compact wavelength splitter based on lithium niobate nanowire optical waveguides

Ming CHEN; Zi-chen LIU

doi:10.1007/s11801-012-1119-y

Journals >Optoelectronics Letters >Volume 8 >Issue 1 >Page 17 > Article

Optoelectronics Letters
Vol. 8, Issue 1, 17 (2012)

Design of ultra-compact wavelength splitter based on lithium niobate nanowire optical waveguides

Ming CHEN^1,* and Zi-chen LIU²

Author Affiliations

¹School of Electronics Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710121, China

²Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China

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DOI: 10.1007/s11801-012-1119-y Cite this Article

CHEN Ming, LIU Zi-chen. Design of ultra-compact wavelength splitter based on lithium niobate nanowire optical waveguides[J]. Optoelectronics Letters, 2012, 8(1): 17 Copy Citation Text

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Abstract

A wavelength splitter with ultra-compact and simple structure is proposed and analyzed by using both plane wave expansion (PWE) method and finite difference time domain (FDTD) method. The device is based on directional coupling between two parallel lithium niobate (LiNbO₃, LN) nanowire optical waveguides. The wavelength splitter with a coupling region length of 5 μm can separate 1.31 μm and 1.55 μm wavelengths for corresponding outputs with transmittance higher than 97%.

CHEN Ming, LIU Zi-chen. Design of ultra-compact wavelength splitter based on lithium niobate nanowire optical waveguides[J]. Optoelectronics Letters, 2012, 8(1): 17

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