READ ME File For Dataset for 'Laser stabilized to a fiber interferometer with close-to-zero temperature sensitivity ' accepted by Laser & Photonics Review. Dataset DOI: 10.5258/SOTON/D3779 ReadMe Author: Meng Ding, University of Southampton This dataset supports the manuscript accepted by Laser & Photonics Review: Bo Shi, Irene Barbeito Edreira, Meng Ding, Zitong Feng, Win Indra, Francesco Poletti, Giuseppe Marra, Radan Slavík, "Laser stabilized to a fiber interferometer with close-to-zero temperature sensitivity," in Laser & Photonics Review. Uploaded Archive (RAR) includes 4 data files that are Excel format (.xlsx) The figures are as follows: Fig. 2: Characterization of thermal sensitivity of the compensated interferometer. Fig2b in sheet Fig2b, Column A&B, phase change of HCFs in sealed box, Column C&D, phase change of HCFs in unsealed box; Fig2c in sheet Fig2c, column A: temperature, column B: Thermal sensitivity; Fig2d in sheet Fig2d, thermal sensitivity slopes of different interferometer at zero-crossing point, Column B: SMF, Column C: Crystalline, Column D: HCF, Column E: ULE-cavity, Column F: Here report; Fig. 3: Phase variations before and after sealing the compensated interferometer box. Sheet unsealed box: before sealing the box. Sheet sealed box: after sealing the box. Fig. 4: Phase response of interferometer inside the sealed aluminum box subject to 1℃ temperature modulation for average temperatures of 29.6, 30.5, 31.5, 32.5, 33.4, and 34.3℃: column A: time; column B: temperature; column C: phase change. Fig. 6: Characterization of thermally insensitive delay-line stabilized laser. Sheet frequency: The frequency variation of the laser stabilized by the compensated fiber interferometer over almost 100 hours. Sheet Frequency drift: Frequency drift. Sheet Allan deviation: Allan deviation measured and comparison of other different lasers. Date of data collection: 1/6/2021-4/1/2025 Information about geographic location of data collection: University of Southampton, U.K. Licence: Creative Commons Attribution (CC-BY). Related projects: This work was financially supported by the UK Engineering and Physical Sciences Research Council (EP/W037440/1), European Research Council (682724), and UK Royal Academy of Engineering. Further, it has been supported by UK Department for Science Innovation and Technology through the National Measurement System Program. Date that the file was created: 2 Dec, 2025