Moving fibre/phase mask-scanning beam technique for enhanced flexibility in producing fibre gratings with uniform phase mask

Cole, M.J.; Loh, W.H.; Laming, R.I.; Zervas, M.N.; Barcelos, S.

doi:10.1049/el:19950986

Cited by 181 publications

(56 citation statements)

References 8 publications

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“…one whereby the angle of the interfering beams is fixed, a detuning process may be applied. The detuning process introduces a differential in the distance between each stepped exposure of an interference pattern and the inherent period of the grating structure [7]; the maximum detuning only depends on the beam spot size, thus small spot sizes allow for larger detuning ranges [17]. The DGW process builds up the grating structure through successive exposure of the small spot interference pattern with a diameter of ~6 μm, with each single snapshot only contributing a fraction of the overall grating exposure at any given point in the grating structure.…”

Section: Ultra-wide Grating Detuningmentioning

confidence: 99%

Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation

Sima¹,

Gates²,

Rogers³

et al. 2013

Opt. Express

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A direct UV grating writing technique based on phase-controlled interferometry is proposed and demonstrated in a silica-on-silicon platform, with a wider wavelength detuning range than any previously reported UV writing technology. Electro-optic phase modulation of one beam in the interferometer is used to manipulate the fringe pattern and thus control the parameters of the Bragg gratings and waveguides. Various grating structures with refractive index apodization, phase shifts and index contrasts of up to 0.8 × 10 −3 have been demonstrated. The method offers significant time/energy efficiency as well as simplified optical layout and fabrication process. We have shown Bragg gratings can be made from 1200nm to 1900nm exclusively under software control and the maximum peak grating reflectivity only decreases by 3dBover a 250 nm (~32THz) bandwidth.

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Section: Ultra-wide Grating Detuningmentioning

confidence: 99%

Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation

Sima¹,

Gates²,

Rogers³

et al. 2013

Opt. Express

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show abstract

“…14(a)). To meet this second requirement, the fiber should be moved relative to the phase mask (which is also a well-developed method), and this would enable the insertion of π phase shifts into the gratings during the fabrication process (Asseh et al, 1997;Cole et al, 1995).…”

Section: Design and Fabrication Of Fbg-based Bandpass Filtersmentioning

confidence: 99%

Hybrid Tabu Algorithm for the Synthesis and Fabrication of Fiber Bragg Gratings

Ngo¹,

Zheng²

2008

Tabu Search

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“…The UV beam was the fourth-harmonic generation of a Q-switched YAG laser and the wavelength was 266 nm. The 14-cm long FBG was fabricated by scanning a mirror along the phase mask in a similar way to that described in [16,17]. The scanning velocity was appropriately adjusted to obtain single longitudinal-mode oscillation.…”

Section: Characteristics Of the λ/4-shifted Dfb Er-doped Fiber Lasermentioning

confidence: 99%

A CW, polarization-maintaining .LAMBDA./4-shifted DFB Er-doped fiber laser at 1.54.MU.m

Suzuki

Takahashi

Yoshida

2007

IEICE Electron. Express

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Abstract:We describe a polarization-maintaining (PM) λ/4-shifted DFB Er-doped fiber laser (EDFL), in which optical pulsation effects caused by Er 3+ ion-pairs were successfully removed by co-doping erbium fiber with 12 wt% aluminum. Stable CW operation was realized at a pump power of 100 mW. The laser exhibited single longitudinalmode oscillation with a single polarization. The output power, linewidth of the longitudinal mode, and RIN at the relaxation oscillation frequency were 0.5 mW, 82 kHz, and −79 dB/Hz at a pump power of 100 mW, respectively. Stable operation was also obtained at a pump power of 140 mW, where the above values were improved to 0.8 mW, 43 kHz, and −92 dB/Hz, respectively. Keywords: distributed feedback lasers, erbium-doped fiber, optical fiber lasers Classification: Photonics devices, circuits, and systems [11] L. Luo and P. L. Chu, "Suppression of self-pulsing in an erbium-doped fiber laser," Opt. Lett., vol. 22, no. 15, pp. 1174-1176, Aug. 1997 Z. E. Harutjunian, W. H. Loh, R. I. Laming, and D. N. Payne, "Single polarisation twisted distributed feedback fibre laser," Electron. Lett., vol. 32, no. 4, pp. 346-348, Feb. 1996.

show abstract

Moving fibre/phase mask-scanning beam technique for enhanced flexibility in producing fibre gratings with uniform phase mask

Cited by 181 publications

References 8 publications

Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation

Ultra-wide detuning planar Bragg grating fabrication technique based on direct UV grating writing with electro-optic phase modulation

Hybrid Tabu Algorithm for the Synthesis and Fabrication of Fiber Bragg Gratings

A CW, polarization-maintaining .LAMBDA./4-shifted DFB Er-doped fiber laser at 1.54.MU.m

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