A technique for mitigating the effect of the writing-beam profile on fibre Bragg grating fabrication

Turitsyna, Elena G.; Gbadebo, Adenowo; Williams, J.A.R.

doi:10.1364/oe.23.012628

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…al. [29]. Once this issue is mitigated the inter-channel spacing error and reduced channel strength due to the fibre photosensitivity became apparent, as can be seen in Fig.…”

Section: Target Spectrum Design and Observation Of Errors In Fabricationmentioning

confidence: 95%

Fabrication of precise aperiodic multichannel fibre Bragg grating filters for spectral line suppression in hydrogenated standard telecommunications fibre

Gbadebo¹,

Turitsyna²,

Williams³

2018

Opt. Express

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We demonstrate the design and fabrication of multichannel fibre Bragg gratings (FBGs) with aperiodic channel spacings. These will be suitable for the suppression of specific spectral lines such as OH emission lines in the near infrared (NIR) which degrade ground based astronomical imaging. We discuss the design process used to meet a given specification and the fabrication challenges that can give rise to errors in the final manufactured device. We propose and demonstrate solutions to meet these challenges.

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“…al. [29]. Once this issue is mitigated the inter-channel spacing error and reduced channel strength due to the fibre photosensitivity became apparent, as can be seen in Fig.…”

Section: Target Spectrum Design and Observation Of Errors In Fabricationmentioning

confidence: 95%

Fabrication of precise aperiodic multichannel fibre Bragg grating filters for spectral line suppression in hydrogenated standard telecommunications fibre

Gbadebo¹,

Turitsyna²,

Williams³

2018

Opt. Express

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“…The designed grating structure was fabricated using the ultraviolet laser direct-writing system developed at Aston University, which allows the grating to be created pitchby-pitch [23], [24]. The coupling strength profile and the varied period were realized by appropriately controlling the ON/OFF of an AO-modulator and moving the phase mask/fibre.…”

Section: Experimental Demonstrationmentioning

confidence: 99%

Transmissive Fiber Bragg Grating-Based Delay Line Interferometer for RZ-OOK to NRZ-OOK Format Conversion

Liu

Preciado

et al. 2019

IEEE Access

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We propose a return-to-zero on-off keying (RZ-OOK) to non-return-to-zero (NRZ) OOK conversion scheme based on a transmissive phase-modulated fiber Bragg grating (PM-FBG). The PM-FBG has a spectrum similar to the combination of a delay line interferometer and a narrow band optical filter, which is designed and synthesized using numerical optimization algorithm. The coupling strength of the PM-FBG is almost uniform and the grating period varies along the fiber length according to the optimization method. The designed PM-FBG has been fabricated using advanced ultraviolet laser inscription technique. Experimental results show that such a PM-FBG can perform RZ-OOK to NRZ-OOK format conversion successfully.INDEX TERMS Bragg gratings, fiber optics, optical fiber devices, optical signal processing, optical fiber communication.

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“…A 21-channel FBG was fabricated using a seamless UV-inscription technique with a beam profile (BP) pre-compensation mechanism, as shown in Fig. 6(a) [25]. The inscription system uses a frequency doubled argon ion CW laser producing a 244 nm beam, which is modulated using an acoustic optical modulator (AOM) and collimated to a 270 μm waist size to illuminate a 1071 nm period uniform phase mask (PM).…”

Section: Grating Fabricationmentioning

confidence: 99%

“…In this work, w FBG. A tailor and the chann the sensor is 0 temperature sensitivity of achievable ch [25,31]. Mult single fiber t sensing.…”

Section: Conclusiomentioning

confidence: 99%

“…The MC-FBG was designed using the layer peeling (LP) algorithm, in which each channel is spatially separated [21][22][23][24]. A 21-channel MC-FBG was fabricated using seamless UV-inscription with a uniform phase mask [25]. Real time temperature field mapping was demonstrated using a wavelength division multiplexing (WDM) technique to interrogate this device.…”

Section: Introductionmentioning

confidence: 99%

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Multichannel fiber Bragg grating for temperature field monitoring

et al. 2019

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We demonstrate a multichannel fiber Bragg grating (MC-FBG) based distributed temperature field sensor with millimeter-order spatial resolution. The MC-FBG was designed by using the layer peeling (LP) algorithm with a tailored group delay characteristic and fabricated using seamless UV-inscription. We have achieved a 21-channel MC-FBG with 0.2 nm bandwidth of each channel and 0.5 nm channel gap. The sensor was tested by using a temperature field distribution. Experimental results show that the sensor had a spatial resolution of 3 mm and could measure a maximum temperature gradient of 7.85 °C/mm.

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A technique for mitigating the effect of the writing-beam profile on fibre Bragg grating fabrication

Cited by 7 publications

References 12 publications

Fabrication of precise aperiodic multichannel fibre Bragg grating filters for spectral line suppression in hydrogenated standard telecommunications fibre

Fabrication of precise aperiodic multichannel fibre Bragg grating filters for spectral line suppression in hydrogenated standard telecommunications fibre

Transmissive Fiber Bragg Grating-Based Delay Line Interferometer for RZ-OOK to NRZ-OOK Format Conversion

Multichannel fiber Bragg grating for temperature field monitoring

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