Improving broadband emission within Bi/Er doped silicate fibres with Yb co-doping

Sathi, Zinat M.; Zhang, Jianzhong; Luo, Yanhua; Canning, John; Peng, Gang-Ding

doi:10.1364/ome.5.002096

Cited by 31 publications

(12 citation statements)

References 23 publications

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“…Note that the time convention, exp(jωt) , has been assumed throughout. Similarly, as reported in [23], gain materials, e.g., rare earth materials ( Er 3+ ) [18,24] or graphene [25], can be used in fibers to compensate for losses. In this work, we assume that the gain material is lightly doped into the background material in the indicated circular core region.…”

Section: Thz Pcf Configurationmentioning

confidence: 99%

A Terahertz (THz) Single-Polarization-Single-Mode (SPSM) Photonic Crystal Fiber (PCF)

et al. 2019

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This paper presents a novel approach to attain a single-polarization-single-mode (SPSM) photonic crystal fiber (PCF) in the terahertz (THz) regime. An initial circular hole PCF design is modified by introducing asymmetry in the first ring of six air holes in the cladding, i.e., epsilon-near-zero (ENZ) material is introduced into only four of those air holes and the other two remain air-filled but have different diameters. The resulting fundamental X-polarized (XP) and Y-polarized (YP) modes have distinctly different electric field distributions. The asymmetry is arranged so that the YP mode has a much larger amount of the field distributed in the ENZ material than the XP mode. Since the ENZ material is very lossy, the YP mode suffers a much higher loss than the XP mode. Consequently, after a short propagation distance, the loss difference (LD) between the XP and YP modes will be large enough that only the XP mode still realistically exists in the PCF. To further enhance the outcome, gain material is introduced into the core area to increase the LDs between the wanted XP mode and any unwanted higher order (HO) modes, as well as to compensate for the XP mode loss without affecting the LD between the XP and YP modes. The optimized PCF exhibits LDs between the desired XP mode and all other modes greater than 8.0 dB/cm across a wide frequency range of 0.312 THz. Consequently, the reported PCF only needs a length of 2.5 cm to attain an SPSM result, with the unwanted modes being more than 20 dB smaller than the wanted mode over the entire operational band.

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Section: Thz Pcf Configurationmentioning

confidence: 99%

A Terahertz (THz) Single-Polarization-Single-Mode (SPSM) Photonic Crystal Fiber (PCF)

et al. 2019

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“…For example, Bi-doped optical fibers (BDFs) have already been proved as the promising active media for the creation of BDF lasers and amplifiers in the near infrared (NIR) region from 1150 to 1800 nm, including the regions of 1250 -1500 nm and 1600-1800 nm, where efficient rareearth fiber lasers are absent [1]. In addition, Bi/Er and Bi/Er/Yb co-doped optical fiber (BEDF and BEYDF) have further been developed for broader bandwidth [2,3]. The BDF lasers can cover O, E, S, C, L and U bands, which are commonly used for fiber-optic telecommunication [4,5].…”

Section: Introductionmentioning

confidence: 99%

Introductory Chapter: Bismuth-Related Optoelectronic Materials

Luo¹,

Wen²,

Zhang³

2020

Bismuth - Fundamentals and Optoelectronic Applications

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“…Especially, bismuth-doped optical fibres (BDFs) have been developed for fibre amplifiers and lasers from 1250 to 1500nm and 1600 to 1800nm [8][9][10][11][12][13]. Later on, Bi/Er co-doped silicate optical fibres (BEDFs), due to their great potential in photonic applications from 1150 to 1700nm covering both the used bandwidth (C band) and the huge unused bandwidth, have been proposed and developed [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effects of Post Treatments on Bismuth-Doped and Bismuth/ Erbium Co-doped Optical Fibres

Wei¹,

Ding²,

Fan³

et al. 2018

Bismuth - Advanced Applications and Defects Characterization

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Bismuth-doped and bismuth/erbium co-doped optical fibres have attracted much attention for their great potential in the photonic applications at ultrawide O, E, S, C and L bands. The effects of post treatments, including various heating, high energy ray radiation, laser radiation and H 2 loading processes, on these fibres' performance, functionality and stability have been experimentally studied. Experimental results demonstrate that these post treatments could allow us to get insights regarding the formation and the structure of bismuth active centre (BAC) and be used to control and regulate the formation of BAC.Keywords: bismuth-doped fibre (BDF), bismuth and erbium co-doped optical fibre (BEDF), bismuth active centre (BAC), broadband, post treatments, thermal treatment, gamma radiation, photo-bleaching, H 2 loading

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Improving broadband emission within Bi/Er doped silicate fibres with Yb co-doping

Cited by 31 publications

References 23 publications

A Terahertz (THz) Single-Polarization-Single-Mode (SPSM) Photonic Crystal Fiber (PCF)

A Terahertz (THz) Single-Polarization-Single-Mode (SPSM) Photonic Crystal Fiber (PCF)

Introductory Chapter: Bismuth-Related Optoelectronic Materials

Effects of Post Treatments on Bismuth-Doped and Bismuth/ Erbium Co-doped Optical Fibres

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