Observation of Dirac mode in modified honeycomb hollow core photonic crystal fiber

Yang, Li; Qian, Guoquan; Tang, Guowu; Yuan, Fangqiang; Zhang, Zhishen; Huang, Kaimin; Shi, Zhenguo; Qian, Qi; Yang, Zhongmin

doi:10.1016/j.optmat.2019.01.029

Cited by 9 publications

(6 citation statements)

References 27 publications

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“…Relevant to PhC design, these invariants can be useful for finding spectrally-isolated Dirac points for applications such as creating cavity states that are algebraically localized to embedded point defects [28][29][30][31]89] or enabling large-area single-mode lasing [90,91].…”

Section: B Example 2: Dirac Semi-metal In Class Aimentioning

confidence: 99%

“…A wide variety of topological phases have been realized using PhC-based platforms (as distinct from waveguide-arrays [6,7], coupled-resonator [8,9] or microwave-circuit [10] realizations). In one and two dimensions, this includes analogs of the SSH model with quantized polarization [11][12][13], Chern insulators [14][15][16][17][18][19], quantum spin-Hall-like phases [20][21][22][23][24], Dirac semi-metals [25][26][27][28][29][30][31], valley-Hall phases [32][33][34][35], bulkobstructed higher-order topological insulators (HOTIs) [36][37][38][39][40][41], including quadrupolar HOTIs [42][43][44], and fragile phases [45]. Several of these have also been proposed for photonic device applications such as for lasing [13,[46][47][48], harmonic generation [49,50]…”

Section: Introductionmentioning

confidence: 99%

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Topological Phases of Photonic Crystals under Crystalline Symmetries

Vaidya¹,

Ghorashi²,

Christensen³

et al. 2023

Preprint

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Photonic crystals (PhCs) have emerged as a popular platform for realizing various topological phases due to their flexibility and potential for device applications. In this article, we present a comprehensive classification of topological bands in one-and two-dimensional photonic crystals, with and without time-reversal symmetry. Our approach exploits the symmetry representations of field eigenmodes at high-symmetry points in momentum space, allowing for the efficient design of a wide range of topological PhCs. In particular, we show that the complete classification provided here is useful for diagnosing photonic crystal analogs of obstructed atomic limits, fragile phases, and stable topological phases that include bands with Dirac points and Chern numbers.

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Section: B Example 2: Dirac Semi-metal In Class Aimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Topological Phases of Photonic Crystals under Crystalline Symmetries

Vaidya¹,

Ghorashi²,

Christensen³

et al. 2023

Preprint

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“…Due to the periodic nature of PCs, they exhibit PBGs in all directions, acting as ideal mirrors for incident light waves. This property holds potential applications in different fileds suchas lasers [2], filters [3,4], optical waveguides [5][6][7][8][9], optical fibers [10][11][12], all-optical logic gates [12][13][14][15][16], biosensors [17][18][19], splitters [20,21], imaging [22] and all-optical analog to digital converters [23,24]. Also, PCs photonic crystals have found a highly practical application in the field of all-optical logic gates, garnering substantial attention because of their versatility in various all-optical signal processing applications.…”

Section: Introductionmentioning

confidence: 99%

“…Also, PCs photonic crystals have found a highly practical application in the field of all-optical logic gates, garnering substantial attention because of their versatility in various all-optical signal processing applications. Numerous variants of all-optical logic gates employing PCs have been suggested, with examples such as the XOR [25,26], OR, NOR [16,17], AND [13], NAND [16,17], DMUX [12], decoders [27,28], encoders [29], and half and full adders [30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

High-Speed Photonic Decoder Employing Two-Dimensional Photonic Crystals

Esmaeili,

Daghighazar,

Chaharmahali

2023

Preprint

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The objective of this study is to design, analyze, and simulate a novel and ultrafast 1 × 2 photonic decoder. The device is composed of two-dimensional (2D) photonic crystals where silicon rods are placed in air. It includes two beam splitters and a phase shifter, which are implemented using point defects. Additionally, line defects are integrated into the device to steer the light wave without causing dissipation. The simulation yielded 0.1 ps response time, contrast ratio of 2.55 dB, and a bit rate of 0.66 Tb/s. The simulation was performed using 2D finite difference time domain and plane wave expansion methods. The findings suggest that this device holds great potential as a candidate for all-optical digital integrated circuits.

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“…A wide variety of topological phases have been realized using PhC-based platforms (as distinct from waveguide arrays [6,7], coupled ring resonators [8,9], microwave resonators [10], or electrical circuit [11][12][13] realizations). In one and two dimensions, this includes analogs of the SSH model with quantized polarization [14][15][16], Chern insulators [17][18][19][20][21][22], quantum spin-Hall-like phases [23][24][25][26][27], Dirac semimetals [28][29][30][31][32][33][34], valley-Hall phases [35][36][37][38], bulk-obstructed higherorder topological insulators (HOTIs) [39][40][41][42][43][44], including quadrupolar HOTIs [45][46][47], and fragile phases [48]. Several of these have also been proposed for photonic device applications such as for lasing [16,[49][50]…”

Section: Introductionmentioning

confidence: 99%