optical heterodyne polarimeter|Noninvasive glucose monitoring in vivo with an optical heterodyne : mail order Abstract. Phase variations occur when a circularly polarized light beam either passes through a chiral solution or is reflected from a non-absorbing material. They can be measured accurately . webGFS 13 km 01.03. 06UTC. We 03h: We 04h: We 05h: We 06h: We 07h: We 08h: We 09h: We 10h: We 11h: We 12h: We 13h: We 14h: We 15h: We 16h: We 17h: We 18h: We 19h: .
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An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit’s eye. A Zeeman laser in conjunction with a Glan–Thompson analyzer was used to generate an optical heterodyne signal.Abstract. Phase variations occur when a circularly polarized light beam either passes through a chiral solution or is reflected from a non-absorbing material. They can be measured accurately . This is one of the first reported investigations that demonstrates the use of optical polarimetry for eye-based in vivo glucose measurements across multiple animals and is part .
An optical polarimetry technique was used for in vivo physiological glucose monitoring. The technique demonstrated provides a basis for the development of a .
Optical Heterodyne Polarimeter for Studying Space
This paper describes an optical heterodyne polarimeter with a photodetector array by which the space- and time-dependent state of polarization (SOP) of light can be determined.A novel optical polarimeter to sense the glucose level in vivo and noninvasively has been developed in the Institute of Radiological Science, National Yang Ming University. A 30-minute . An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit's eye.A new cross-polarized heterodyne optical technique is developed for two-dimensional (2D) simultaneous mapping of both birefringence and thickness variations in large flat glass panels commonly used in liquid-crystal displays (LCDs). Weak depolarization of a linearly polarized probe beam due to glass birefringence is detected by means of heterodyne mixing of the two cross .
This paper proposes a novel method, which uses an optical polarized heterodyne polarimeter and lock-in technique to detect the concentration of a glucose solution obtained from the detection of a phase sensitive heterodyning signal. In this experiment, the phase measurement relates only with the optical activity of the concentration of a . A novel heterodyne polarimeter is designed to measure the concentration of chiral media. Optical common-path for the interference of the TE and TM waves, after a polarizer, is set up in our system .
An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit's eye. A Zeeman laser in conjunction with a Glan-Thompson analyzer was used to generate an optical heterodyne signal. The amplitude of the heterodyne signal linearly related to the optical rotation angle of the .A double-loop optical heterodyne polarized interferometer is set up to measure the optical rotation power and the circular refraction indices of optical activity. The system accuracy in the measurement of both the rotation angle and the chiral parameter is 10−4 within the ±2° phase detection sensitivity of the system. The circular refraction indices of quartz activity were .
For the optical polarimeter based on the structure of polarizer–Faraday modulator–analyzer, a novel method of optical rotation measurement was proposed by the waveform analysis of optical intensity signals. The calculation method of the optical rotation was provided by measuring the signal width of the waveform. Furthermore, the optical rotations of .DOI: 10.1016/0030-4018(94)90422-7 Corpus ID: 121661027; Concentration measurements in chiral media using optical heterodyne polarimeter @article{King1994ConcentrationMI, title={Concentration measurements in chiral media using optical heterodyne polarimeter}, author={H. J. King and Chien Chou and Horng Chang and Yeu-Chuen Huang}, .
A novel optical polarimeter to sense the glucose level in vivo and noninvasively has been developed in the Institute of Radiological Science, National Yang Ming University. A 30-minute delay between the aqueous glucose and the blood glucose was observed in rabbit's eyeball. Currently, aqueous glucos . An amplitude sensitive optical heterodyne polarimeter was setup in order to monitor noninvasively the aqueous glucose concentration in rabbit's eye. A range of the blood glucose from 35 mg/dl to 135 mg/dl was measured in vivo by biological glucose assay (BGA), while the optional rotation of the aqueous glucose was measured by a polarimeter . A double-loop optical heterodyne polarized interferometer is set up to measure the optical rotation power and the circular refraction indices of optical activity. . (-4) within the +/-2 degrees phase detect . Optical heterodyne polarimeter for measuring the chiral parameter and the circular refraction indices of optical activity Opt Lett .
An angular displacement-enhanced heterodyne polarimeter has been employed to investigate the optical properties and thermal denaturation of collagen. In the angular measurement, the phase change of the collagen at different temperatures can be enhanced using a null-detection technique with a retardation-tunable wave-plate and analyzer .
To show the validity of this method, a He–Ne laser with wavelength 632.8 nm modulated by an electro-optic modulator (New Focus, Model 4002) was used as a heterodyne light source.The frequency difference between p- and s-polarized components [10] was 1 kHz.The experimental condition δ = 178° was chosen for high measurement resolution.A half-wave . 1. Introduction. The optical polarimeter can be widely used in the characterization of optical active substances which impose a rotation on the polarization plane of light that travels along the substance, such as sugar, glucose, and crystal quartz [1], [2].There is an immediate and valuable application in monitoring glucose concentration [3], [4], [5] and in controlling the .Figure 1 shows the optical setup of the optical heterodyne polarimeter in which a quartz Cornu depolarizer (QCD) (see Fig. 2) is composed of two identical quartz prisms (prism I and prism II) with .
System analysis of a common-path heterodyne polarimeter. Ming-Hung Chiu and Jun-Wei Lin. Opt. Continuum 2(6), 1457-1469 (2023) . Instrumentation, Measurement, and Optical Sensors (6) Lasers and Laser Optics (2) Materials (1) Nanophotonics, Metamaterials, and . An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit's eye. A Zeeman laser in conjunction with a Glan-Thompson . A new cross-polarized heterodyne optical technique is developed for two-dimensional (2D) simultaneous mapping of both birefringence and thickness variations in . Heterodyne double-channel polarimeter for mapping birefringence and thickness of flat glass panels Vladimir V. Protopopov; Vladimir V. Protopopov a) Samsung Electronics . A reliable glucose concentration measurement system was proposed that consisted of a circular heterodyne polarimeter and a reusable enzymatic sensor. The circular heterodyne polarimeter was constructed using a highly stable circular heterodyne light source and a compact alignment-free apparatus that provided phase stability of less than 1° within 20 .
In addition, the phase change is enhanced using the null-detection technique, which is achieved by incorporating a retardation-tunable wave-plate and an analyzer into a custom-made common-path heterodyne polarimeter. The optical common-path setup for the interference of TE and TM waves in our system is employed to reduce noise from the .
A new type of optical heterodyne polarimeter. Jiun-You Lin 1 and Der-Chin Su 1. Published 26 November 2002 • Published under licence by IOP Publishing Ltd Measurement Science and Technology, Volume 14, Number 1 Citation Jiun-You Lin and Der-Chin Su 2003 Meas. Sci. Technol. 14 55
A dual-frequency equal-amplitude paired polarization heterodyne polarimeter (DEPHP) was set up in order to precisely measure the mutarotation rate constants of D-glucose in tridistilled water. The DEPHP is based on a balanced detector detection scheme for measurement of the optical rotation angle of .A novel heterodyne polarimeter is designed to measure the concentration of chiral media. Optical common-path for the interference of the TE and TM waves, after a polarizer, is set up in our system to reduce noises from the environment. A phase-variable waveplate is placed behind the sample to enhance the phase signal change of rotation of polarization introduced by the .N2 - An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit's eye. A Zeeman laser in conjunction with a Clan-Thompson analyzer was used to generate an optical heterodyne signal. The amplitude of the heterodyne signal linearly related to the optical rotation angle .
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A dual-frequency equal-amplitude paired polarization heterodyne polarimeter (DEPHP) was set up in order to precisely measure the mutarotation rate constants of d-glucose in tridistilled water. The DEPHP is based on a balanced detector detection scheme for measurement of the optical rotation angle of d-glucose/water solution during the conversion process between α-d-glucose . An amplitude-sensitive optical heterodyne polarimeter was set up to monitor noninvasively the aqueous glucose concentration in a rabbit's eye. A Zeeman laser in conjunction with a Glan-Thompson analyzer was used to generate an optical heterodyne signal. The amplitude of the heterodyne signal linearly related to the optical rotation angle of the .
Similarly, in 1997, Feng et al. [2] performed glucose concentration measurements using an optically polarized heterodyne polarimeter and a phase lock-in technique. . Chou et al. [4] determined the phase-sensitive optical rotation angle of a chiral medium using a circularly polarized optical heterodyne interferometer based on a Zeeman laser.
Noninvasive glucose monitoring in vivo with an optical heterodyne polarimeter. Appl Opt. 1998; 37 (16):3553–3557. [Google Scholar] 14. Baba JS, Cameron BD, Theru S, Coté GL. Effect of temperature, pH, and corneal birefingence on polarimetric glucose monitoring in the eye. J Biomed Opt. 2002; 7 (3):321–328.
Noninvasive glucose monitoring with optical heterodyne technique
Noninvasive glucose monitoring in vivo with an optical heterodyne
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optical heterodyne polarimeter|Noninvasive glucose monitoring in vivo with an optical heterodyne