Optical fibers are ubiquitous and inexpensive substrates commonly used in telecom, and more recently as a platform for innovative concepts such ‘lab-on-a-fiber’ ones, where multiple functionalities are integrated in the fiber substrate.
One of the challenges for machining fibers is to overcome the substrate curvature, and to achieve high accuracy throughout the volume. Common techniques include the use of index-matching fluids and special fiber holding devices.
Here, we discuss the machining of optical fibers combined with chemical etching using a specific tooling configuration, mimicking the principal of a lathe, numerically controlled down to micron precision. An analysis of the beam propagating through the fiber is used to compensate for optical aberrations, inherent to such geometry. Further, we also show the combination of this process with a CO2-laser morphing technique to achieve high accuracy shapes with optical quality surfaces.
David Lambelet, Yves Bellouard, and Claude-Alban Ranély-Vergé-Dépré, "Femtosecond laser based three dimensionals micromachining of optical fibers (Conference Presentation)," Proc. SPIE 10522, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVIII, 105220Y (Presented at SPIE LASE: January 29, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2287468.5751469676001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 12,000 conference presentations, including many plenary and keynote presentations.