Print Email Facebook Twitter Absolute distance measurement with a gain-switched dual optical frequency comb Title Absolute distance measurement with a gain-switched dual optical frequency comb Author Hei, K. (TU Delft ImPhys/Medical Imaging) Anandarajah, Kaszubowska (Trinity College Dublin) Martin, Eamonn P. (Dublin City University) Shi, Guang (Hangzhou Dianzi University) Anandarajah, Prince M. (Dublin City University) Bhattacharya, N. (TU Delft Optical Technologies) Date 2021 Abstract The measurement of distance plays an important role in many aspects of modern societies. In this paper, an absolute distance measurement method for arbitrary distance is proposed and demonstrated using mode-resolved spectral interferometry with a gain-switched dual comb. An accuracy of 12 µm, when compared to a He-Ne fringe counting laser interferometer, for a displacement up to 2.5 m is demonstrated by tuning the repetition frequency of the dual comb from 1.1 GHz to 1.4 GHz. The compact measurement system based on a gain-switched dual comb breaks the constraint of periodic ambiguity. The simplification and improvements are significant for further industrial applications. Subject OA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:b59a7a51-8bc8-4227-bdc6-6507dc3158ed DOI https://doi.org/10.1364/OE.413478 ISSN 1094-4087 Source Optics Express, 29 (6), 8108-8116 Part of collection Institutional Repository Document type journal article Rights © 2021 K. Hei, Kaszubowska Anandarajah, Eamonn P. Martin, Guang Shi, Prince M. Anandarajah, N. Bhattacharya Files PDF oe_29_6_8108.pdf 2.86 MB Close viewer /islandora/object/uuid:b59a7a51-8bc8-4227-bdc6-6507dc3158ed/datastream/OBJ/view