Optical Biotelemetry

This chapter deals with the outline of the basic technologies necessary in order to use optical biotelemetry in practice. It introduces some of the optical biotelemetry systems. Optical biotelemetry is an integrated technology which consists of basic technologies such as optics, communication, biosignal measurement, and information processing. The chapter outlines the basic technologies necessary for optical biotelemetry. A special consideration to optical biotelemetry is necessary in the part from the modulator to the demodulator. The chapter describes the communication technology concerning this part. For optical biotelemetry, it is necessary to understand the propagation of the optical signal in various conditions. The chapter summarizes the optical propagation in transcutaneous telemetry and ambulatory telemetry. There are various multiplexing techniques for optical telemetry. Every technique has problems to be solved in the practical use for optical telemetry.