Tunable acoustic bursts for customized tapered fiber Bragg structures

The inscription of customized fiber Bragg structures under acoustic excitation is proposed and demonstrated. By setting the proper acoustic excitation function, the desired spectrum of the grating can be achieved. In this paper, the effect of applying a burst acoustic wave during the process of Bragg grating inscription using the direct writing method through a phase mask is investigated. Among all the characteristics that can be changed due to a periodic defect insertion in the uniform Bragg structure, the control of phase is used to demonstrate this assertion. The results of numerical simulations are shown to be in excellent agreement with experiments. It can be further extended to generate multiple phase shifts in optical fiber and/or waveguides, if the defects are inserted at different positions, as is shown.

[1]  Yves Painchaud,et al.  Multiwavelength fiber laser based on the utilization of a phase-shifted phase-only sampled fiber Bragg grating. , 2009, Optics letters.

[2]  Roberson A. Oliveira,et al.  Numerical approach for designing a Bragg grating acousto-optic modulator using the finite element and the transfer matrix methods , 2008 .

[3]  Roberson A. Oliveira,et al.  Complex Bragg grating writing using direct modulation of the optical fiber with flexural waves , 2011 .

[4]  K. Hill,et al.  Fiber Bragg grating technology fundamentals and overview , 1997 .

[5]  D N Payne,et al.  Er(3+):Yb(3+)-codoped fiber distributed-feedback laser. , 1994, Optics letters.

[6]  M. Zervas,et al.  Effect of phase shift perturbations and complex local time delay in fiber Bragg gratings , 2001 .

[7]  S. Radic,et al.  Phase-shifted fiber Bragg gratings and their application for wavelength demultiplexing , 1994, IEEE Photonics Technology Letters.

[8]  J. Marti,et al.  Dual-Wavelength DFB Erbium-Doped Fiber Laser With Tunable Wavelength Spacing , 2010, IEEE Photonics Technology Letters.

[9]  F. Zhou,et al.  Novel designs for sampled grating-based multiplexers demultiplexers. , 1999, Optics letters.

[10]  B. Eggleton,et al.  Long periodic superstructure Bragg gratings in optical fibres , 1994 .

[11]  J. Canning,et al.  Precision phase-shifting applied to fibre Bragg gratings , 2005 .

[12]  John Canning,et al.  pi -phase-shifted periodic distributed structures in optical fibres by UV post-processing , 1994 .

[13]  J. Canning,et al.  Complex Bragg grating writing in acoustically excited optical fiber , 2010, 35th Australian Conference on Optical Fibre Technology.

[14]  John Canning,et al.  Vibration mode analysis of a silica horn–fiber Bragg grating device , 2010 .

[15]  Jae Yong Lee,et al.  Complex traversal time for optical pulse transmission in a Fabry–Perot cavity , 2000 .

[16]  J. Mora,et al.  Wavelength-switchable fiber laser using acoustic waves , 2005, IEEE Photonics Technology Letters.

[17]  Periklis Petropoulos,et al.  A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings , 2001 .

[18]  Miguel V Andrés,et al.  Tunable Photonic Microwave Filter With Single Bandpass Based on a Phase-Shifted Fiber Bragg Grating , 2010, IEEE Photonics Technology Letters.

[19]  P. Petropoulos,et al.  Phase encoding and decoding of short pulses at 10 Gb/s using superstructured fiber Bragg gratings , 2001, IEEE Photonics Technology Letters.

[20]  John Canning,et al.  Dynamic control of a phase-shifted FBG through acousto-optic modulation , 2011 .