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This paper reports a 3-dimensional (3D) micro-optical coupling system for improving coupling efficiency in the Littrow configured micro-electro-mechanical system (MEMS) tunable lasers. In the coupling system, an optical fiber acts as a rod lens for light convergence in the vertical plane, while a deep-etched silicon parabolic mirror confines the light in the horizontal plane. Compared with previous...
Optical switches are important for applications in optical communications and photonic integrated circuits (PICs) to allow for selection of optical paths. In this work, a thermo-optic switch based on a Mach-Zehnder interferometer (MZI) is designed. A comparison and optimization of the switch components, including beam splitters, couplers and MZI, is carried out. A 1 × 2 switch using silicon nitride...
The paper presents the dynamic characteristics of a MEMS-based tunable coupled-cavity laser, constructed by integrating a Fabry-Perot chip, a gain chip and a deep-etched parabolic mirror. It gains advantages over the previous tunable lasers in the form of high speed of wavelength tuning, since this wavelength tuning is based on free carrier plasma effect to change the refractive index. The currently...
This paper presents an integrated photonic MEMS switching system. The switching system consist of two perpendicular photonic crystal (PC) surface waveguide joined together to form a waveguide bend. An elliptical micro-mirror driven by a comb drive actuator is positioned with its foci at the end cells of the waveguide bend to provide the switching mechanism. When the position of the mirror is displaced,...
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