Double Ring Firing Single Optical Fiber Deflector

• Published in: IEEE photonics technology letters Vol. 31; no. 3; pp. 230 - 233
• Main Authors: Seymen, A. A., Simsek, E. U., Ozgur, E., Ortac, B.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Angle of reflection; Angles (geometry); Curved beams; Deflection; Electric arcs; Fabrication; Fiber lasers; Firing; Laser ablation; Laser beams; Lasers; light deflectors; Mechanical polishing; optical fiber devices; Optical fibers; Splicing
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2018.2889594

We report a novel fabrication method of double ring firing single optical fiber deflector. The fiber deflector is fabricated as a convergent cone having two different cone angles, by conventional mechanical polishing. The two-angled conical fiber deflector geometry is formed in a single fiber tip, deflecting incoming laser light into two distinct circular rings. Two cone angles provide two deflection angles due to total internal reflection and refraction of the incoming laser light. We achieved two deflected circular beams at 60° and 85° with the cone angles of 56° and 72° at one single fiber deflector. The laser power is evenly split between two conical areas. The fabrication process of the fiber deflector does not involve any splicing or arc discharge process; thus, it is convenient, effective, and high-throughput.