Integrated micro blood flowmeter

Eiji Higurashi, Renshi Sawada, Takahiro Ito

Research output: Contribution to journalArticlepeer-review


Wearable devices that gather physiological information are highly demanded for bedside monitoring in hospitals, telenursing for elderly people living alone at home, and long-term health assessments to predict and prevent adult diseases. Against this background, we have developed an ultra-small laser blood flowmeter (2 mm wide × 3 mm long × 1.5 mm thick) that permits real-time monitoring of capillary microcirculation. This paper describes the measuring principle, fabrication method, and experimental results of the integrated micro blood flowmeter having a distributed feedback laser diode with a wavelength of 1.31 μm and an edge-illuminated photodiode.

Original languageEnglish
Pages (from-to)28-32
Number of pages5
JournalNTT R and D
Issue number5
Publication statusPublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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