Journal ArticleDOI
Mode evolution type polarization splitter on InGaAsP/InP
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TLDR
In this paper, a new type of mode-evolution polarization-splitter based on InGaAsP/lnP has been designed and realized, which uses the large waveguide birefringence of the first-order TE and TM modes in a ridge waveguide made in a heterostructure.Abstract:
A new type of mode-evolution polarization-splitter based on InGaAsP/lnP has been designed and realized. The component uses the large waveguide birefringence of the first-order TE and TM modes in a ridge waveguide made in a heterostructure, In the input section an asymmetric Y-junction acts as a mode converter in order to inject first-order TE- and TM-modes in a polarization-splitting section, which consists of a Y-junction formed by a bimodal and a monomodal waveguide. In the output section a third Y-junction is connected to the bimodal waveguide to couple the first-order mode to a monomodal output waveguide. Components that are 6-mm long and show polarization splitting at a wavelength of 1.55 mu m have been realized. The best splitting ratios are close to -20 dB, which is in agreement with BPM simulations. Excess losses are below 1 dB. >read more
Citations
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Journal ArticleDOI
Polarization splitter based on photonic crystal fibers
Lin Zhang,Changxi Yang +1 more
TL;DR: A new kind of polarization splitter based on dual-core photonic crystal fibers with a symmetric directional coupler configuration that gives rise to an adequate difference in the coupling lengths for the two orthogonal polarizations is reported.
Journal ArticleDOI
A Compact Integrated Polarization Splitter/Converter in InGaAsP–InP
TL;DR: In this paper, a novel design for an integrated passive polarization splitter/converter combination is presented, which consists of a Mach-Zehnder interferometer with polarization converters in both arms.
Journal ArticleDOI
A new short and low-loss passive polarization converter on InP
TL;DR: In this article, an improved polarization converter in InGaAsP-InP was proposed, which contains a series of waveguide sections with asymmetric cross-sections with angled facets.
Journal ArticleDOI
A novel polarization splitter based on the photonic crystal fiber with nonidentical dual cores
Lin Zhang,Changxi Yang +1 more
TL;DR: In this article, a novel polarization splitter based on photonic crystal fibers (PCFs) with two non-identical cores is proposed, and two highly birefringent cores are vertically arranged to obtain polarization selective coupling.
Journal ArticleDOI
A short polarization splitter without metal overlays on InGaAsP-InP
TL;DR: In this article, a very short polarization splitter on InGaAsP-InP was designed and realized for the first time, which used the large waveguide birefringence of the first-order TE and TM modes to obtain polarization selective directional coupling.
References
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Journal ArticleDOI
Mode conversion in planar-dielectric separating waveguides
William K. Burns,A. Milton +1 more
TL;DR: In this paper, the authors studied the mode-conversion behavior of branching or separating planar-dielectric waveguides as a function of branch asymmetry and taper slope.
Journal ArticleDOI
TE/TM mode splitters on InGaAsP/InP
TL;DR: In this article, a metal cladding on one of its branches is used to separate the TE and TM polarization of the optical wave, and the polarization splitters can act in two distinct modes of operation, depending on the degree of lateral confinement of an optical rib waveguide before an asymmetric coupler.
Journal ArticleDOI
A TE-TM mode splitter in LiNbO/sub 3/ by proton exchange and Ti diffusion
TL;DR: In this paper, a TE-TM mode splitter using branching waveguides made by proton exchange (PE) and Ti indiffusion (TI) in Z-cut LiNbO/sub 3/ is proposed and designed using the coupled mode theory.
Journal ArticleDOI
Integrated optic adiabatic polarization splitter on silicon
TL;DR: In this article, an adiabatic polarization splitter, fabricated with silica and silicon nitride films on a silicon substrate, was demonstrated, and a rejection of the unwanted polarization of −20 to −34 dB was achieved with single filtering and −35 to −45 dB with double filtering.
Journal ArticleDOI
A polarization splitter on LiNbO/sub 3/ using only titanium diffusion
TL;DR: In this article, a novel polarization splitter is proposed for use in integrated optical circuits on lithium niobate, which is based on the mode sorting effect with no external control, while its fabrication requires only a single technology: the diffusion of titanium.