Fabrication of integrated &lt;inline-formula&gt;&lt;math display="inline" overflow="scroll"&gt;&lt;mrow&gt;&lt;mi mathvariant="normal"&gt;Ti&lt;/mi&gt;&lt;mo&gt;:&lt;/mo&gt;&lt;mi mathvariant="normal"&gt;Li&lt;/mi&gt;&lt;mi mathvariant="normal"&gt;Nb&lt;/mi&gt;&lt;msub&gt;&lt;mi mathvariant="normal"&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/inline-formula&gt; waveguide polarizer

Dobrusin, Vadim; Ruschin, S.

doi:10.1117/1.3046714

Cited by 5 publications

(1 citation statement)

References 10 publications

(11 reference statements)

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“…Although the phenomenon of polarization separation in titanium-diffused substrates was observed previously [7], we have given for the first time a theoretical description of this phenomenon and established its relation with technological parameters, as well as determining the region of these parameters ensuring high values of the coefficient of polarization separation (above 40 dB). It should be noted that the width of titanium strip can be used as a parameter controlling the polarization separation coefficient.…”

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confidence: 97%

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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confidence: 97%

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

et al. 2016

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Passive polarization splitter using zero-gap directional coupler in LiNbO3

et al. 2022

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Optimization of the annealed proton exchange method with controlled annealing for multifunctional integrated optical chip production

ASIK¹,

Gökkavas²,

oztekin³

et al. 2022

Appl. Opt.

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The main objective of our study is to develop a new approach to the annealed proton exchange (APE) method for the fabrication of the multifunctional integrated optical chip (MIOC) used in fiber-optic gyro systems and to eliminate the loss of time and material, especially in mass production applications. In this work, self-polarized waveguides, which are the basic components of a MIOC device, were produced by the APE method and studied. With the developed method, controlled annealing trials have been carried out from a certain region on the L i N b O 3 substrate used in waveguide production, and the annealing time specific to the annealing process was determined. By utilizing a special setup for the hot acid process, the proton exchange process was accomplished without a sudden temperature change of the substrate. Using prism coupling measurements of the fabricated waveguides, annealing times were determined to obtain index change values suitable for 45%–50% optical throughput. Mode profiles of devices with high optical throughput that were produced by the proposed method were measured, and it was seen that devices from different proton exchange runs had similar profiles. As a result, many undamaged substrates were fabricated, and their optical quality was found to be within the expected values.

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Fabrication of integrated <inline-formula><math display="inline" overflow="scroll"><mrow><mi mathvariant="normal">Ti</mi><mo>:</mo><mi mathvariant="normal">Li</mi><mi mathvariant="normal">Nb</mi><msub><mi mathvariant="normal">O</mi><mn>3</mn></msub></mrow></math></inline-formula> waveguide polarizer

Cited by 5 publications

References 10 publications

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

Polarization separation in titanium-diffused waveguides on lithium niobate substrates

Passive polarization splitter using zero-gap directional coupler in LiNbO3

Optimization of the annealed proton exchange method with controlled annealing for multifunctional integrated optical chip production

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