The Application of Metal Deposition in Optical Sensor Technique. The Microscale Cu Deposition as “Electrochemical Welding”

The problem of how to attach an optical glass fiber to a copper plate was solved with the use of microscale electrolyser of special design. The respective laboratory scale technology was presented. The results were documented by photos of ready elements. The matter of relation between deposition by means of constant current electrolysis without potential control and the process realized with the use of cyclic voltammetry and chronopotentiometry techniques was raised and discussed.

I. Introduction

The development of optical fiber sensors for a wide range of industrial applications is still a matter of interest ([1]–[14] and literature therein). The flat diaphragm with two glass optical fibers attached is an important part of the optical fiber sensor construction. Pressure signal on the flat diaphragm allows to detect pressure differences within a wide range of pressure (60Pa – 75KPa) and frequency (0.5 Hz – 5KHz) [9]. Fig. 1 presents a part of interferometer fiber optic sensor configuration [1]. The complete sensor construction is presented in relevant literature [10]. Fig. 1.

Interferometer fiber optic sensor configuration: metal flat diaphragm (plate) with two glass fibers attached on both sides: awers (left) and rewers (right).