Development of optoelectronic-based pulsed current sensor to detect the poor laser discharge condition

• Published in: Sadhana (Bangalore) Vol. 42; no. 10; pp. 1665 - 1670
• Main Authors: Nayak, Anil S, Vijayan, Rajasree, Naphade, Deepak, Rawat, V S, Manohar, K G
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01-10-2017; Springer Nature B.V
• Subjects: Discharge; Engineering; Fiber optics; Metal vapor lasers; Optical communication; Optical fibers; Optical receivers; Optoelectronic devices; Pulsed current; Remote sensing; Sensors; Signal processing; Transformers; Undersea cables; High-frequency current transformer; copper vapour laser; HFBR
• ISSN: 0256-2499; 0973-7677
• DOI: 10.1007/s12046-017-0703-z

A current transformer (CT)-based sensor has been developed to detect poor discharge conditions in copper vapour laser. The optoelectronic-based pulsed current sensor architecture involves the optical transmitter–receiver HFBR, high-frequency current transformer, and fiber optic link. The CT has been designed and calibrated to ensure generation of an optical signal at the current threshold crossover. Bandwidth analysis of the CT is carried out using the bode plot. The optoelectronic inter-conversion of the pulsed voltage of the CT and transmission via fiber optic link provides the non-contact current sensing and remote signal processing of the signal. This study discusses the details of the sensor.