An integrated laser blood flowmeter

Eiji Higurashi, Renshi Sawada, Takahiro Ito

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

We have constructed a very small and lightweight blood flowmeter using micromachining and surface mounting techniques for a wearable health monitoring system. The hybrid integrated structure of the optical system incorporates a InGaAsP-InP distributed feedback laser diode (DFB-LD) with a wavelength of 1310 nm, an edge-illuminated photodiode (PD) and a polyimide waveguide on silicon substrate (2 mm × 3 mm). This integrated flowmeter can be positioned directly on the tissue and permits real-time monitoring of capillary microcirculation. In-vivo measurements of blood perfusion in a finger confirm the feasibility of the blood flowmeter.

Original languageEnglish
Pages (from-to)591-595
Number of pages5
JournalJournal of Lightwave Technology
Volume21
Issue number3
DOIs
Publication statusPublished - Mar 1 2003
Externally publishedYes

Fingerprint

flowmeters
Flowmeters
blood
Blood
Lasers
systems health monitoring
Microcirculation
lasers
Monitoring
Distributed feedback lasers
Micromachining
distributed feedback lasers
mounting
micromachining
Photodiodes
Mountings
polyimides
Polyimides
Optical systems
photodiodes

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

An integrated laser blood flowmeter. / Higurashi, Eiji; Sawada, Renshi; Ito, Takahiro.

In: Journal of Lightwave Technology, Vol. 21, No. 3, 01.03.2003, p. 591-595.

Research output: Contribution to journalArticle

Higurashi, E, Sawada, R & Ito, T 2003, 'An integrated laser blood flowmeter', Journal of Lightwave Technology, vol. 21, no. 3, pp. 591-595. https://doi.org/10.1109/JLT.2003.809551
Higurashi, Eiji ; Sawada, Renshi ; Ito, Takahiro. / An integrated laser blood flowmeter. In: Journal of Lightwave Technology. 2003 ; Vol. 21, No. 3. pp. 591-595.
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