Optical Fibre Gratings by UV Laser Inscription

UV holographic inscription
UV laser holographic inscription
Aston Institute of Photonic Technologies (AIPT) has established its world-leading position in advanced optical fibre grating fabrication. Over last 20 years, AIPT has developed and supplied fibre gratings of variety structures and high functions to ~50 worldwide research institutes and industrial companies as key components to research projects and commercial systems.  

Laser inscription facilities:

  •   4 FreD @ 248 nm UV lasers
  •   Cu vapour laser @ 255 nm
  •   HeCd laser @ 325 nm

 Advanced fibre grating devices:

  •   Fibre Bragg and long-period gratings with filter responses from  700nm to 2µm
  •  Chirped gratings with bandwidths from 2nm to 30nm
  •   Tilted fibre gratings with small (0.7° to 20°) and large (~80°)  blazed structures
  •   45° tilted gratings as in-fibre polarisers with polarisation extinction ratios up to 50dB in standard and 35dB in PM fibres

Key projects and highlights:

  •   Up to 80 FBG sensors used to monitor strain condition of a 48m mast in a yacht (MAST project)
  •   Chirped gratings to monitor server condition with strain up to 30000µ (MAST project)
  •   Small angle tilted gratings to form miniature portable in-fibre spectrometer (EMPIRE project)
  •   45°tilted gratings as in-fibre polarisers with polarisation extinction ratio up to 35dB in PM and 50dB in   standard telecom fibres  (US Air Force and Boeing project)
  •   DNA hybridisation sensor using dual-peak long-period gratings (EPSRC)
  •   Optic fibre vector sensors to measure transverse strain with temperature compensation function (EPSRC)
  •   FBGs in passive and active 3-core mid-IR fibres (EPSRC) 

Special grating host fibres


AIPT photonics fabrication technologies

AIPT FBG research

Fibre grating devices and functions


Recent publications:

  • Z. Yan, H. Wang, K. Zhou, Y. Wang, W. Zhao, and L. Zhang, "Broadband Tunable All-Fiber Polarization Interference Filter Based on 45°Tilted Fiber Gratings," J. Lightwave Technol. 31(1), 94-98 (2013).
  • Zhijun Yan, Hushan Wang, Kaiming Zhou, Yishan, Wang, Cheng Li, Wei Zhao, Lin Zhang “All-fiber mode locking fiber laser with an intra-cavity all-fiber polarization interference filter” Opt. Lett., vol. 37, 21, 4522-4524
  • Xianglian Liu, Hushan Wang, Zhijun Yan, Yishan Wang, Wei Zhao, Wei Zhang, Lin Zhang, Zhi Yang, Xiaohong Hu, Xiaohui Li, Deyuan Shen, Cheng Li, Guangde Chen, “All-fiber normal-dispersion single-polarization passively mode-locked laser based on a 45°-tilted fiber grating” Optics Express. 08/2012; 20(17):19000-19005
  • Zhijun Yan, Chengbo Mou, Hushan Wang, Kaiming Zhou, Yishan, Wang, Wei Zhao, Lin Zhang, "All-fiber polarization interference filters based on 45°-tilted fiber gratings," Opt. Lett., vol. 37, pp. 353-355, 2012
  • Zhijun Yan, Chengbo Mou, Kaiming Zhou, Xianfeng Chen, and Lin Zhang, “UV-inscription, polarisation dependant loss characteristics and applications of 45º tilted fibre gratings”, IEEE Journal of Lightwave Technology, Vol. 29(18),  2715-2724, 2011
  • A. Adebayo, Z. Yan, L. Zhang, and D. Robinson ,“Power tapping function in near infra-red region based on 45° tilted fiber gratings” Optics and photonics journal, Vol.3 No.2, 158-162 2013
  • Z. Yan, K. Zhou, and L. Zhang, "In-fiber linear polarizer based on UV-inscribed 45o tilted grating in polarization maintaining fiber," Opt. Lett. 37(18), 3819-3821 (2012).

Employable Graduates; Exploitable Research