Narrow-band rejection filters with negligible backreflection using tilted photoinduced gratings in single-mode fibers

Haggans, Charles W.; Singh, Harminder; Varner, W.F.; Li, Yaowen; Zippin, M.

doi:10.1109/68.669268

Cited by 17 publications

(6 citation statements)

References 10 publications

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“…In the remainder of this paper, we will describe the many interesting applications and features of weakly tilted TFBG sensors that have arisen over the last ten years or so, concentrating on our own work and that of the other pioneers in this field. Apart from the works already cited (and those to be cited in the remainder of this paper), and for completeness of this review, we refer readers to the following lists of references that deal with TFBG‐based: physical sensors –, refractive index sensors –, chemical sensors , , SPR sensors , bio‐chemical sensors , ; with TFBG assisted sensor interrogation techniques –, intrinsic properties, spectral features and theory of TFBGs –, telecommunications, laser and nonlinear applications of TFBGs –, and miscellaneous uses of TFBGs , , . Of particular interest are TFBGs with “excessive” tilt angles (45 degrees and larger, up to 80 degrees , ), a research area largely developed by the Photonics Research Group at Aston University in the UK: these gratings can also be used to couple to forward propagating cladding modes , , to detect refractive index changes [52, 53,58, 62], but they are mostly used for broadband polarization selection in fibers , , , , , , , and for coupling the light out of the fibers , , , , , , .…”

Section: Introduction To Tilted Fiber Bragg Gratings and Historical Pmentioning

confidence: 99%

Tilted fiber Bragg grating sensors

Albert

Shao

Caucheteur

2012

Laser & Photonics Reviews

651

441

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Optical fiber gratings have developed into a mature technology with a wide range of applications in various areas, including physical sensing for temperature, strain, acoustic waves and pressure. All of these applications rely on the perturbation of the period or refractive index of a grating inscribed in the fiber core as a transducing mechanism between a quantity to be measured and the optical spectral response of the fiber grating. This paper presents a relatively recent variant of the fiber grating concept, whereby a small tilt of the grating fringes causes coupling of the optical power from the core mode into a multitude of cladding modes, each with its own wavevector and mode field shape. The main consequence of doing so is that the differential response of the modes can then be used to multiply the sensing modalities available for a single fiber grating and also to increase the sensor resolution by taking advantage of the large amount of data available. In particular, the temperature cross-sensitivity and power source fluctuation noise inherent in all fiber grating designs can be completely eliminated by referencing all the spectral measurements to the wavelength and power level of the core mode back-reflection. The mode resonances have a quality factor of 10 5 , and they can be observed in reflection or transmission. A thorough review of experimental and theoretical results will show that tilted fiber Bragg gratings can be used for high resolution refractometry, surface plasmon resonance applications, and multiparameter physical sensing (strain, vibration, curvature, and temperature).

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Section: Introduction To Tilted Fiber Bragg Gratings and Historical Pmentioning

confidence: 99%

Tilted fiber Bragg grating sensors

Albert

Shao

Caucheteur

2012

Laser & Photonics Reviews

651

441

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“…There are also some accessory spectral tuning methods reported which are mainly based on thermooptical [7][8][9], electrical [10], magnetic [11] tuning techniques using FBGs or liquid-filled photonic crystal fibers, but the bandwidth tuning range is still limited (only cover C or L band) and the process is complex (liquid injection into micro-holes). The use of tilted fiber Bragg gratings (TFBG) as band-rejection filters was initially reported by Haggans et al [12] and Kashyap et al [13] (using TFBGs with tilt angles less than 8°). The advantages of TFBGs are that the tilted grating planes enhance the coupling of light from the core mode to a large number of backward propagating cladding-modes, resulting in a series of discrete resonances over a large wavelength range in transmission (from tens of nanometers to several hundred nanometers) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Wideband-adjustable reflection-suppressed rejection filters using chirped and tilted fiber gratings

Liu¹,

Guo²,

Wu³

et al. 2014

Opt. Express

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Wideband-adjustable band-rejection filters based on chirped and tilted fiber Bragg gratings (CTFBG) are proposed and experimentally demonstrated. The flexible chirp-rate and wide tilt-angle provide the gratings with broadband filtering functions over a large range of bandwidths (from 10 nm to 150 nm), together with a low insertion loss (less than 1 dB) and a negligible back-reflection (lower than -20 dB). The slope profile of CTFBG in transmission can be easily tailored by adjusting the tilt angle, grating irradiation time and chirp rate-grating factor, and it is insensitive to the polarization state of the input light, as well as to temperature, axial strain and surrounding refractive index. Furthermore, by coating the CTFBG with a suitable polymer (whose refractive index is close to that of the cladding glass), the cladding modes no longer form weakly discrete resonances and leave a smoothly varying attenuation spectrum for high-quality band-rejection filters, edge filters and gain equalizers.

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“…Major applications of TFBGs in optical fiber communications include gain flattening filters for erbium-doped fiber amplifiers (EDFAs) [21][22][23], filters & wavelength division multiplexing (WDM) channel monitor [24][25][26][27][28][29][30], and polarization independent components [11,[31][32][33][34][35], etc. Considering the topic of this review, our discussion is limited to sensing applications of TFBGs in the following part.…”

Section: Sensing Applications Of Tfbg Researchmentioning

confidence: 99%

Tilted fiber Bragg gratings: Principle and sensing applications

et al. 2010

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In this paper, the mode coupling mechanism of tilted fiber Bragg gratings (TFBGs) is briefly introduced at first. And a general review on the fabrication, theoretical and experimental research development of TFBGs is presented from a worldwide perspective, followed by an introduction of our current research work on TFBGs at the Institute of Modern Optics, Nankai University (IMONK), including TFBG sensors for single-parameter measurements, temperature cross sensitivity of TFBG sensors, and TFBG-based interrogation technique. Finally, we would make a summary of the related key techniques and a remark on prospects of the research and applications of TFBGs.

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Narrow-band rejection filters with negligible backreflection using tilted photoinduced gratings in single-mode fibers

Cited by 17 publications

References 10 publications

Tilted fiber Bragg grating sensors

Tilted fiber Bragg grating sensors

Wideband-adjustable reflection-suppressed rejection filters using chirped and tilted fiber gratings

Tilted fiber Bragg gratings: Principle and sensing applications

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