READ ME File For Dataset for 'Stable optical frequency comb distribution enabled by hollow-core fibers'

Dataset DOI: https://doi.org/10.5258/SOTON/D2306

ReadMe Author: Zitong Feng, University of Southampton 

This dataset supports the publication:

Zitong Feng, Giuseppe Marra, Xi Zhang, Eric Numkam Fokoua, Hesham Sakr, John Richard Hayes, Francesco Poletti, David John Richardson, Radan Slavik
Stable optical frequency comb distribution enabled by hollow-core fibers, Wiley Laser & Photonics Reviews 


Uploaded Archive (ZIP) includes 10 data files that are Excel format (.xlsx)


The figures are as follows:


Fig. 4:	
Fig.4_chromatic dispersion.xlsx	 Chromatic dispersion of the HCF and SMF measured over the C+L bands.

Fig. 5b:
Fig.5.b_fiber path delay.xlsx Fiber path delay change of 7.7 km HCF and 7.5 km of SMF over time when subject to a periodic room temperature variation of 2.25 K.

Fig.6: 
Fig.6_optical spectrum.xlsx 20-dBm OFC optical spectrum transmitted through 7.7 km of HCF and 7.5 km of SMF. 15-dBm OFC transmitted through SMF.

Fig. 8:
Fig.8a_phase noise.xlsx  Measured phase noise of 40th harmonic (10 GHz) of the fundamental frequency spacing at the user end.
Fig.8b_allan deviation.xlsx Measured fractional frequency stability of 40th harmonic (10 GHz) of the fundamental frequency spacing at the user end.
            
Fig. 9:
Fig.9a_phase noise.xlsx  Measured phase noise of 1555-1557 nm optical mode at the user end.
Fig.9b_allan deviation.xlsx Measured fractional frequency stability of 1555-1557 nm optical mode at the user end.

Fig. 11:
Fig.11a_fiber path delay.xlsx Fiber path delay time change of 7.7 km HCF and 7.5 km of SMF with the temperature change of 1.85 K.
Fig.11b_allan deviation.xlsx Comparison of the frequency stability of 40th harmonic (10 GHz microwave signal) of the fundamental frequency spacing as affected by the chromatic dispersion thermal sensitivity of HCF and SMF for various levels of BW.

Fig. 12:
Fig.12_allan deviation.xlsx Comparison of the optical frequency stability of HCF and SMF for various levels of BW.


Date of data collection: 1/2/2021-1/5/2021

Information about geographic location of data collection: University of Southampton, U.K.

Licence: Creative Commons Attribution.

Related projects:
Airguide, RAEng Senior Research Fellowship

Date that the file was created: 17 Jul, 2022