Article

Fairweather, D; Tamussino, M; Masoudi, A; Feng, Z; Barham, R; Parkin, N; Cornelius, D; Brambilla, G; Curtis, A; Marra, G (2024) Characterisation of the optical response to seismic waves of submarine telecommunications cables with distributed and integrated fibre-optic sensing. Scientific Reports, 14. 31843

Schioppo, M; Kronjaeger, J; Silva, A; Ilieva, R; Paterson, J W; Baynham, C F A; Bowden, W; Hill, I R; Hobson, R; Vianello, A; Dovale- Alvarez, M; Williams, R A; Marra, G; Margolis, H S; Amy-Klein, A; Lopez, O; Cantin, E; Alvarez-Martinez, H; Le Target, R; Pottie, P E; Quintin, N; Legero, T; Hafner, S; Sterr, U; Schwarz, R; Dorscher, S; Lisdat, C; Koke, S; Kuhl, A; Waterholter, T; Benkler, E; Grosche, G (2022) Comparing ultrastable lasers at 7 x 10(-17) fractional frequency instability through a 2220 km optical fibre network. Nature Communications, 13 (1). 212

Shi, B; Sakr, H; Hayes, J; Wei, X H; Fokoua, E N; Ding, M; Feng, Z T; Marra, G; Poletti, F; Richardson, D J; Slavik, R (2021) Thinly coated hollow core fiber for improved thermal phase-stability performance. Optics Letters, 46 (20). pp. 5177-5180.

Clivati, C; Tampellini, A; Mura, A; Levi, F; Marra, G; Galea, P; Xuereb, A; Calonico, D (2018) Optical frequency transfer over submarine fiber links. Optica, 5 (8). pp. 893-901. ISSN 2334-2536

Lessing, M; Margolis, H S; Brown, C T A*; Marra, G (2017) Frequency comb-based time transfer over a 159 km long fiber network. Appl. Phys. Lett., 110 (22). 221101

Delva, P*; Lodewyck, J*; Bilicki, S*; Bookjans, E*; Vallet, G*; Le Target, R*; Pottie, P E*; Guerlin, C*; Meynadier, F*; Le Poncin-Lafitte, C*; Lopez, O*; Amy-Klein, A*; Lee, W K*; Quintin, N*; Lisdat, C*; Al-Masoudi, A*; Dorscher, S*; Grebing, C*; Grosche, G*; Kuhl, A*; Raupach, S*; Sterr, U*; Hill, I R; Hobson, R; Bowden, W; Kronjager, J; Marra, G; Rolland, A; Baynes, F N; Margolis, H S; Gill, P (2017) Test of special relativity using a fiber network of optical clocks. Phys. Rev. Lett., 118 (22). 221102

Kim, J*; Marra, G; Wu, D S*; Richardson, D J*; Slavik, R* (2016) Wavelength conversion technique for optical frequency dissemination applications. Opt. Lett., 41 (8). pp. 1716-1719.

Kim, J*; Schnatz, H*; Wu, D S*; Marra, G; Richardson, D J*; Slavik, R* (2015) Optical injection locking based amplification in phase coherent transfer of optical frequencies. Opt. Lett., 40 (18). pp. 4198-4201.

Slavik, R*; Marra, G; Fokoua, E N*; Baddela, N*; Wheeler, N V*; Petrovich, M*; Poletti, F*; Richardson, D J* (2015) Ultralow thermal signal phase and propagation delay sensitivity in hollow core optical fibers. Sci. Rep., 5. p. 15447.

Parker, B; Marra, G; Johnson, L A M; Margolis, H S; Webster, S A; Wright, L; Lea, S N; Gill, P; Bayvel, P* (2014) Transportable cavity-stabilised laser system for optical carrier frequency transmission experiments. Appl. Opt., 53 (35). pp. 8157-8166.

Wu, D S*; Slavik, R*; Marra, G; Richardson, D J* (2013) Direct selection and amplification of individual narrowly spaced optical comb modes via injection locking: design and characterization. J. Lightwave Technol., 31 (14). pp. 2287-2295.

Lessing, M*; Margolis, H S; Brown, C T A*; Gill, P; Marra, G (2013) Suppression of amplitude-to-phase noise conversion in balanced optical-microwave phase detectors. Opt. Express, 21 (22). pp. 27057-27062.

Wu, D S*; Slavik, R*; Marra, G; Richardson, D J* (2012) Phase noise characterization of injection locked semiconductor lasers to a 250 MHz optical frequency comb.

Marra, G; Margolis, H S; Richardson, D J* (2012) Dissemination of an optical frequency comb over fiber with 3 x 10(-18) fractional accuracy. Opt. Express, 20 (2). pp. 1775-1782.

Ovchinnikov, Y B; Marra, G (2011) Accurate rubidium atomic fountain frequency standard. Metrologia, 48 (3). pp. 87-100.

Marra, G; Slavik, R*; Margolis, H S; Lea, S N; Petropoulos, P*; Richardson, D J*; Gill, P (2011) High resolution microwave frequency transfer over a 86 km-long optical fiber network using a mode-locked laser.. Opt. Lett., 36 (4). pp. 511-513.

Ovchinnikov, Y B; Marra, G (2011) Reply to comment on "Accurate rubidium atomic frequency standard". Metrologia, 48 (5). pp. 448-449.

Tsatourian, V; Margolis, H S; Marra, G; Reid, D T*; Gill, P (2010) Common-path self-referencing interferometer for carrier-envelope offset frequency stabilization with enhanced noise immunity. Opt. Lett., 35 (8). pp. 1209-1211.

Szymaniec, K; Park, S E*; Marra, G; Chalupczak, W (2010) First accuracy evaluation of the NPL-CsF2 primary frequency standard. Metrologia, 47 (4). pp. 363-376.

Marra, G; Margolis, H S; Lea, S N; Gill, P (2010) High-stability microwave frequency transfer by propagation of an optical frequency comb over 50 km of optical fiber. Opt. Lett., 35 (7). pp. 1025-1027.

Marra, G; Henderson, D; Oxborrow, M (2007) Frequency stability and phase noise of a pair of X-band cryogenic sapphire oscillators. Meas. Sci. Technol., 18 (5). pp. 1224-1228.

Conference or Workshop Item

Lessing, M*; Margolis, H S; Brown, C T A*; Marra, G (2015) Simultaneous time and frequency transfer over a 158-km-long fiber network using a mode-locked laser. In: 2015 Conference on Lasers and Electro-Optics (CLEO), 10-15 May 2015, San Jose, CA, USA.

Kim, J*; Wu, D S*; Marra, G; Richardson, D J*; Slavik, R* (2014) Stability characterization of an optical injection phase locked loop for optical frequency transfer applications. In: 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications., 8-13 June 2014, San Jose, USA.

Marra, G; Margolis, H S; Richardson, D J* (2012) Dissemination of an optical frequency comb over fiber with 3 x 10(-18) fractional accuracy. In: 2012 Conference on Lasers and Electro-optics (CLEO), 6-11 May 2012, San Jose, CA, USA.

Tsatourian, V; Margolis, H S; Marra, G; Reid, D T*; Gill, P (2010) Noise-insensitive self-referencing interferometer for carrier-envelope offset frequency stabilization of a Ti:sapphire laser. In: Lasers and Electro-optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010, 16-21 May 2010, Sam Jose, USA.

Marra, G; Lea, S N; Margolis, H S; Gill, P (2008) Fibre transfer of high stability microwave references with optical frequency combs. In: 2008 Lasers and Electro-optics and Quantum Electronics and Laser Science Conference, 4-9 May 2008, San Jose, CA, USA.

Margolis, H S; Lea, S N; Walton, B R; Marra, G; Reid, D T*; Gill, P (2008) Improvements to the robustness of a Ti: sapphire-based femtosecond comb at NPL. In: Proceedings of the 7th Symposium on Frequency Standards and Metrology., 5-11 October 2008, Pacific Grove, California, USA.

Marra, G; Lea, S N; Margolis, H S; Gill, P (2008) Microwave and optical frequency transfer via optical fibre. In: Proceedings of the 7th Symposium on Frequency Standards and Metrology., 5-11 October 2008, Pacific Grove, California, USA.

Margolis, H S; Barwood, G P; Huang, G; Klein, H A; Lea, S N; Marra, G; Tsatourian, V; Walton, B R; Gill, P (2008) An optical clock based on a single trapped 88Sr+ ion. In: Proceedings of the 7th Symposium on Frequency Standards and Metrology., 5-11 October 2008, Pacific Grove, California, USA.

Christodoulia, N; Lea, S N; Marra, G; Margolis, H S; Gill, P; Leburn, C G*; Fusari, F*; Brown, C T A* (2007) Mode-locked lasers for remote intercomparison of frequency standards over optical fibre networks. In: OFMC 2007, 15-17 October 2007, NPL, UK.