Agency for Science, Technology and Research

Gurpreet Singh

Malini Olivo

Renzhe Bi

Dinish Unnimadhava Kurup Soudamini Amma

Kapil Dev

Chris Jun Hui Ho

Provided is an optical probe, and a Raman spectroscopy system using such, including excitation and detection optics coupled to a sampling optics via a beam splitter, in confocal arrangement with a sample focal plane of the sampling optics. The detection optics is arranged to receive Raman signal from the sample focal plane and direct it onto a tip of a detection optical fiber. The optical probe may further include a positioning device mechanically coupled to the sampling optics and configured to control a position of the sample focal plane. In the Raman spectroscopy system a light source is coupled to the excitation optics via an excitation optical fiber, and a spectrometer is coupled to a detection optics via a detection optical fiber. Provided is further a method for measuring Raman signal depth profile in a sample, wherein sample's Raman spectra is measured and stored at different focal plane positions.

Optical probe, Raman spectroscopy system, and method of using the same

Method for measuring respiratory vibration on a human or animal skin, including emitting an emission light at a first position on the skin and receiving a diffused light from the emission light at a second position on the skin; storing a vibration signal including a light intensity of the diffused light received over time; wherein the vibration signal corresponds to a mechanical vibration of the skin, and extracting a respiratory parameter from the vibration signal. In particular, at least one of the first position and the second position is in proximity to or at a trachea, a neck or a chest. The system for carrying out the method includes an emitter, a receiver, a circuit, and a processing unit. A set of a sensor module and a skin adhesive patch is also provided.

Growing community of inventors

Singapore, Singapore

Gurpreet Singh