Electro-optic Ti:PPLN Waveguides As Efficient Optical Wavelength Filters and Mode Polarization Converters

Abstract

We report the first experimentally demonstrated active Šolc-type optical wavelength filters based on Ti:PPLN waveguides. A peak spectral transmittance of ~99% at a bandwidth of ~2.6 nm in telecom bands was obtained in this device.

Design and Test of Embedded Reconfigurable Mode Converter Based on Spontaneous Deformable Materials

“…Therefore, finding suitable parameters to satisfy (7) is the key to the design of the mode converter. In order to further improve the performance of the device, we selected an approximate interval containing parameter L , k (black curve) between waveguide modes TE10 and TE20, and the mode purity of TE10 mode (red curve) and TE20 mode (blue curve) along the propagation direction z .…”

“…Therefore, finding suitable parameters to satisfy (7) is the key to the design of the mode converter. In order to further improve the performance of the device, we selected an approximate interval containing parameter L , In this work, the numerical results were obtained by ANSYS HFSS 2022 R2 based on the finite element method.…”

“…The first step in the design process is to select a suitable width for the rectangle waveguide for supporting the converted guided modes. In the first simulation, we chose the standard Therefore, finding suitable parameters to satisfy (7) is the key to the design of the mode converter. In order to further improve the performance of the device, we selected an approximate interval containing parameter L, L v and θ to conduct multiple sets of simulation experiments.…”

“…Therefore, converting the waveguide mode into a transmission line is a necessary technique in the transmission, measurement, and emission of EM waves. As a typical microwave transmission line, the rectangular waveguide has been widely used in diverse applications, such as radars [6], filters [7], remote sensing equipment [8], and electronic countermeasures systems due to its characteristics of low energy cost and large power capacity [9][10][11]. Because of its fascinating properties and numerous potential applications, most works focus on designing efficient mode converter embedded in rectangular waveguides.…”