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<p>Optical interconnects play a vital role in efficiently managing and directing light paths within the dynamic realm of optical communication and signal processing. This paper presents a theoretical approach with validation for phase shifters using a Y-branch multimode interference architecture. This device simultaneously performs splitting, combining, and switching functions through the controlled phase shifting. Utilizing phase manipulation with the phase difference of <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\:\frac{7\pi\:}{6}\)</EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\:\frac{\pi\:}{5}\)</EquationSource> </InlineEquation> makes the device ideal for versatile applications. The design is fine-tuned using the beam propagation method at 1550&#xa0;nm, focusing on self-imaging and the transfer matrix method. The proposed device demonstrates impressive uniformity between the output power-splitting. This device reveals a low excess loss of 0.76 dB for the splitter, 0.65 dB for the combiner, and 0.62 dB for the switch. Furthermore, the device exhibits minimal crosstalk, measuring − 25.73 dB for the splitter, -29.15 dB for the combiner, and − 30.36 dB for the switch at 1.55&#xa0;μm, highlighting its suitability for practical integration into advanced optical networks.</p>

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Enhancing optical interconnect with nonlinear coupler-integrated polymer phase shifters

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Md Koushik Alam,
  • Noor Afsary,
  • Md. Shohel Parvez,
  • Md Omar Faruk Rasel

摘要

Optical interconnects play a vital role in efficiently managing and directing light paths within the dynamic realm of optical communication and signal processing. This paper presents a theoretical approach with validation for phase shifters using a Y-branch multimode interference architecture. This device simultaneously performs splitting, combining, and switching functions through the controlled phase shifting. Utilizing phase manipulation with the phase difference of \(\:\frac{7\pi\:}{6}\) and \(\:\frac{\pi\:}{5}\) makes the device ideal for versatile applications. The design is fine-tuned using the beam propagation method at 1550 nm, focusing on self-imaging and the transfer matrix method. The proposed device demonstrates impressive uniformity between the output power-splitting. This device reveals a low excess loss of 0.76 dB for the splitter, 0.65 dB for the combiner, and 0.62 dB for the switch. Furthermore, the device exhibits minimal crosstalk, measuring − 25.73 dB for the splitter, -29.15 dB for the combiner, and − 30.36 dB for the switch at 1.55 μm, highlighting its suitability for practical integration into advanced optical networks.