Fig. 1From: Automatic and continuous blood pressure monitoring via an optical-fiber-sensor-assisted smartwatchSchematic of the blood pressure monitoring system. a The monitoring system consists of an optical fiber sensor, signal acquisition, data processing, blood pressure calculation, smartwatch terminal, and mobile phone. b The fiber adapter's construction. c Distribution of the field energy density. d Distribution of the optical field energy density under pressure e The fabrication of proposed sensorBack to article page