Detection of salinity in the process of heating seawater by using a directional coupler of the multimode plastic optical fiber with a plane mirror as a reflector

Measurement of temperature changes is very important in the fields of physics, chemistry, biology, and industrial applications. The development of temperature sensors also continues to be developed both on an electric and optical basis. In this research, the detection of temperature changes based on optics is successfully detected using optical fiber splitter 1 × 2 by utilizing a plane mirror as a reflector and by stripping the cladding at the end optical fiber. Measurement of the power transmission of reflection to changes in temperature using an optical spectrum analyzer (OSA) at wavelength 1550 nm. This research showed that a linear relationship between transmission power and temperature increase from 40°C to 200°C on the sensor probe with a stripping length of 35 mm.

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Detection of temperature change using optical fiber splitter 1×2 by stripping the cladding at the end of the optical fiber

Sudarsono

Salsabila

Anggoro

et al. 2021

J. Phys.: Conf. Ser.

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All-Silicon Photoelectric Biosensor on Chip Based on Silicon Nitride Waveguide with Low Loss

Luo

Chen

et al. 2023

Nanomaterials

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Compared to the widely used compound semiconductor photoelectric sensors, all-silicon photoelectric sensors have the advantage of easy mass production because they are compatible with the complementary metal-oxide-semiconductor (CMOS) fabrication technique. In this paper, we propose an all-silicon photoelectric biosensor with a simple process and that is integrated, miniature, and with low loss. This biosensor is based on monolithic integration technology, and its light source is a PN junction cascaded polysilicon nanostructure. The detection device utilizes a simple refractive index sensing method. According to our simulation, when the refractive index of the detected material is more than 1.52, evanescent wave intensity decreases with the growth of the refractive index. Thus, refractive index sensing can be achieved. Moreover, it was also shown that, compared to a slab waveguide, the embedded waveguide designed in this paper has a lower loss. With these features, our all-silicon photoelectric biosensor (ASPB) demonstrates its potential in the application of handheld biosensors.

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Detection of salinity in the process of heating seawater by using a directional coupler of the multimode plastic optical fiber with a plane mirror as a reflector

Cited by 2 publications

References 22 publications

Detection of temperature change using optical fiber splitter 1×2 by stripping the cladding at the end of the optical fiber

Detection of temperature change using optical fiber splitter 1×2 by stripping the cladding at the end of the optical fiber

All-Silicon Photoelectric Biosensor on Chip Based on Silicon Nitride Waveguide with Low Loss

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