Plasmon-polariton polarizers on the surface of single-mode channel optical waveguides in lithium niobate

Il’ichev, I. V.; Toguzov, N. V.; Shamray, A. V.

doi:10.1134/s1063785009090132

Cited by 27 publications

(12 citation statements)

References 5 publications

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“…The aim of this work was the experimental creation a planar structure based on a waveguide from an liquid-phase epitaxial ferrite garnet film, about 10 μm in thickness, with a plasmon resonance coating on the surface that is capable of absorbing a TM-polarized nearinfrared wavelength. As is well known [7][8][9] similar structures on the basis of not magnetic material well perform the function of the polarizer. In our case, when a magnetic material is used instead of a dielectric waveguide layer, the structure assumes the possibility of being used as an active element for various planar devices, for example, a light intensity modulator [10].…”

Section: Introductionmentioning

confidence: 81%

“…It is well known [7][8][9] that the effect of the optical waveguide TE polarizer with a plasmon structure on the surface of the waveguide is based on the resonant coupling of the waveguide TM mode to the plasmon mode, which is supported by the metal layer due to the excitation of the surface plasmon resonance. Such a resonance arises under the condition of phase synchronization of the waveguide and plasmon TM modes.…”

Section: Model Of the Structurementioning

confidence: 99%

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Waveguide magnetoplasmonic structure based on ferrite garnet film

et al. 2018

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The magnetoplasmonic structure, which is a planar multimode magnetooptical waveguide, 10 μm thick with plasmon resonance SiO2 / Cu coating on the surface is experimentally realized. With the total length of the magnetooptical waveguide 4.6 mm and the length of the SiO2 / Cu coating equal to 3.9 mm, the insertion loss of the structure for TM- and TE-polarized light was 22 and 4 dB, respectively, at a wavelength of 1550 nm. Linearly polarized light was launched into the magneto-optical waveguide using a SMF-28 single-mode optical fiber coupled to the polished input edge of the waveguide. The structure is of interest for use as miniature magnetically controlled modulators of light intensity.

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Section: Introductionmentioning

confidence: 81%

Section: Model Of the Structurementioning

confidence: 99%

Waveguide magnetoplasmonic structure based on ferrite garnet film

et al. 2018

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“…Several methods have been reported in the literature to produce TE pass polarizer. The most familiar integrated optic polarizer is a metal-clad waveguide polarizer [1]- [5]. The TM guided mode interacts with the mode supported by metal dielectric (waveguide) interface, the surface plasma mode, and gets absorbed by the metal.…”

Section: Introductionmentioning

confidence: 99%

High Extinction Ratio and Short Length Surface Plasmon Polariton Polarizer

Sharma

Madaan

Kapoor

2016

IEEE Photon. Technol. Lett.

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An ultrahigh extinction ratio and extremely short length resonant integrated optic TE pass polarizer are proposed, which is based on the interaction between the short range surface plasmon polaritons and the mode guided by the dielectric waveguide. It is shown that a compact very high extinction ratio and very low insertion loss TE pass polarizer can be designed by optimizing the buffer and metal layer thicknesses. The layer thicknesses and indices are chosen in a way, such that the multilayer plasmonic structure supports only asymmetric eigenmodes. It is shown that, as a result of interference (beat formation) between these asymmetric eigenmodes, a polarizer with an extinction ratio of 171 dB and insertion loss less than 0.01 dB can be designed for 49.4 μm of its length.Index Terms-Integrated optic plasmonic polarizer, metal clad optical waveguide, surface plasmons.

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“…Substituting formulas (2) and (3) into relation (1) and taking into account the smallness of refractive index changes in the waveguide channel (Δn e, o /n e, o 1 0 -3 ), we eventually obtain the following approximate expression for the cutoff wavelength: (4) Thus, the cutoff wavelength in a titanium-diffused waveguide is proportional to the guiding layer thickness (i.e., to diffusion depth ) and square root of the titanium-diffusion-induced change in the refractive index. The depth of titanium diffusion is determined by the process temperature and duration, while being independent of the state of light polarization.…”

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confidence: 99%

“…At the same time, the refractive index change in these waveguides is positive for both ordinary and extraordinary polarization modes, so that the titanium-diffused waveguides do not exhibit polarization separation properties and maintain the propagation of both orthogonal polarization modes. The use of a plasmon-polariton polarizer manufactured on the waveguide surface [4] for TE mode separation unavoidably introduces additional losses in the waveguide.…”

mentioning

confidence: 99%

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

et al. 2016

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The influence of technological parameters of the process of thermal diffusion of titanium in lithium niobate substrates on the polarization-dependent losses of obtained optical waveguide has been theoretically studied. It is established that the anisotropy of refractive index variation leads to different conditions of polarization eigenmode cutoff that can be used for separating extraordinary and quenching ordinary polarization modes. Experiments with titanium-diffused waveguides showed the possibility of extraordinary polarization mode separation above 40 dB in the C-range (1530-1565 nm) of telecommunication wavelengths.

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Plasmon-polariton polarizers on the surface of single-mode channel optical waveguides in lithium niobate

Cited by 27 publications

References 5 publications

Waveguide magnetoplasmonic structure based on ferrite garnet film

Waveguide magnetoplasmonic structure based on ferrite garnet film

High Extinction Ratio and Short Length Surface Plasmon Polariton Polarizer

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

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