Test-bed Dataset for Optical-Based In-Body Communications Research

Description

This dataset contains measurement data from a test-bed specifically for optical-based in-body communication research. The dataset includes three files: a free-space channel, an optical phantom, and biological tissues using a fresh pork meat sample in an ex-vivo experiment. The data (in .xlsx format) presents the impact of controlling the Near-infrared LED's current and adjusting the photodetector's gain setting on the received optical power. In this dataset, two types of receivers were used for the mentioned test bed: an optical power meter and a photodetector module. The optical power meter can be controlled manually for its attenuation, but in this dataset, we used two settings: 0 dB and -4.30 dB to match the photodetector reading. The measurement using a photodetector amplifier module was obtained by extracting the photodetector's output voltage read from the oscilloscope based on the provided datasheet. However, it should be normalized by multiplying it with a specific value. The optical power meter is a NIST-calibrated device dedicated to measuring absolute optical power. Then, the photodetector module, as a device for comparison, is typically used for detecting light and is employed to receive optical signals. Here, we used it as a device to measure relative optical power by extracting its voltage output to optical power in a watt unit. The free space test comprises 5 cm, 7.5 cm, 10 cm, 12.5 cm, and 15 cm of optical distance. The test with samples involved tissue-mimicking phantom (human soft tissue) and actual biological tissues, i.e., pork meat samples containing fat, muscle, and bone. This dataset provides valuable information regarding the standardized test-bed for researchers working in optical-based in-body communication studies, especially when using the near-infrared spectrum 810 nm, which was considered good for penetrating the human body. It is expected that this dataset will also be a good reference for researchers working on Optical Wireless Power Transfer (OWPT) in a free-space setting or through the human body.

Steps to reproduce

We provide the detailed steps to reproduce the dataset in "Read me" file, which can be found in this page. Please read the mentioned file carefully. The dataset provides raw data in a .xlsx file format. Please ensure that you have a proper Microsoft Office (the latest version is preferable) to open the file. The dataset contains 3 files: 1. Raw data - Optical test-bed in-body communications (free-space) The dataset contains measurements in a free-space setting, i.e., 5 cm, 7.5 cm, 10 cm, 12.5 cm, and 15 cm. On the other hand, measurement at a very close distance is also provided, i.e., 0.1 cm (measuring the incident optical power) 2. Raw data- optical test-bed in-body communications (phantom) The dataset contains measurements through the tissue-mimicking phantom (human soft tissue) with different thicknesses, i.e., 1 cm and 4 cm. 3. Raw data- optical test-bed in-body communications (ex-vivo pork meat sample) The dataset contains measurements through the ex-vivo porcine sample (pork meat containing fat - muscle tissues and bone) with a thickness of 3.5 cm.

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