Realization of Polymer-Based Polarization-Insensitive Interleaver Using Multilayer Waveguide Structure

Chen, Kai Xin; Chan, H. P.; Chen, Fu Shen; Chan, Wai Ying

doi:10.1109/lpt.2011.2157675

Cited by 3 publications

(1 citation statement)

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“…The corresponding refractive index sensitivity is 403 nm/RIU, which is approximately six times greater than that of traditional microring resonator sensors [ 13 ]. Regarding the organic materials, polymers have been proven to be potential complementary candidates for inorganic PICs [ 14 , 15 ], they have found a wide utilization in the detection field due to their modifiability and structural designability [ 16 ]. The tunable properties of the polymer give the design and fabrication of the photonic devices much more flexibility [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Liquid M-Z Waveguide Sensor Based on Polymer Suspended Slot Waveguide Structure

Han

et al. 2022

Polymers

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The slot structure has great advantages in improving the sensitivity of integrated waveguide optical sensors and reducing the detection limit. We propose a polymer Mach–Zehnder interferometer (MZI) optical sensor based on the slot structure and adopted the suspended structure to improve optical field interaction with the analyte, hence boosting the sensor’s sensing accuracy. In this paper, the effects of the single waveguide width, slot width, and coupling structure of the slot waveguide on the performance of the sensor operating at a 1550 nm wavelength were analyzed. Under the premise of satisfying single-mode transmission, we designed an MZI with a branch spacing of 10 µm, arm length of 2045 µm, branch span of 700 µm, and slot region of 500 µm. The sensor’s average sensitivity was 972.1 dB/RIU, and its average detection resolution was 1.6 × 10−6 RIU, which is approximately 1.5 times higher than that of the suspended strip waveguide, 1.6 times higher than that of the non-suspended slot structure, and 2.1 times higher than that of the non-suspended strip waveguide.

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