Compact 1 × N power splitters with arbitrary power ratio for integrated multimode photonics

Franz, Yohann; Guasoni, Massimiliano

doi:10.1088/2040-8986/ac1830

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…multiplexing systems and in fiber to home networks [10], and are critically essential for the implementation of quantum logic gates in future quantum computers [11,12]. There has been a growing trend in the realization of multiple WGs (1 × N) [10,[13][14][15][16][17][18][19][20][21][22][23][24] or from multiple to multiple channels (N × N) [25].…”

Section: Introductionmentioning

confidence: 99%

Controllable multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguide systems

Dou¹,

Wei²,

Han³

et al. 2022

J. Opt.

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We investigate high-ﬁdelity multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguides with one input and 2N output waveguide channels. In Hermitian systems, we realize adiabatically light splitting in resonant case based on the stimulated Raman adiabatic passage (STIRAP) and arbitrary proportion from the middle waveguide to outer waveguides in propagation coeﬃcients mismatch case using shortcuts to adiabaticity (STA) technique. In non-Hermitian systems with even waveguides being dissipative, the compact and robust beam splitting can be achieved by eliminating the non-adiabatic coupling via the non-Hermitian STA method. We further verify the feasibility of our theoretical predictions by means of the beam propagation method (BPM). The suggested multiple beam splitters open new opportunities for the realization of on-chip high-bandwidth photonics with high ﬁdelity in short distances.

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Section: Introductionmentioning

confidence: 99%

Controllable multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguide systems

Dou¹,

Wei²,

Han³

et al. 2022

J. Opt.

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“…Multiport optical Splitters play an important role in classical and quantum photonics integral circuits (PICs) [1,2], facilitating the distribution of light from input ports to desired output intensity distributions. Conventional design of a multiport Splitter relies on the concatenation of directional couplers (DCs) [3][4][5][6] or monolithic multimode interference (MMI) Splitters [7][8][9][10][11][12]. However, they show a considerable insertion loss and fast bandwidth drop with the number of ports, which limits their applications in photonic integrated circuits.…”

Section: Introductionmentioning

confidence: 99%

Low-loss broadband multiport optical splitters

Vildoso,

Vicencio,

Petrovic

2023

Optics and Photonics for Information Processing XVII

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Efficiently achieving platform nonspecific designs with multiple functional requirements, such as arbitrary splitting ratio, low insertion losses, broad bandwidth, and small footprint, poses a significant challenge in the inverse design of optical Splitters. Traditional designs often fall short in meeting all the necessary criteria, while more successful nanophotonic inverse designs often demand substantial time and energy resources per device. Here, we present an efficient inverse design algorithm which provides universal designs of Splitters compliant with all the above constraints and offers significantly greater throughput compared to nanophotonic inverse design. To demonstrate the effectiveness of our method, we designed Splitters with various splitting ratios and fabricated 1×N power Splitters using direct laser writing in a borosilicate platform, which shows zero loss within marginal error, competitive imbalance of < 0.5 dB and a broad bandwidth range of 20 − 60 nm around 640 nm. Notably, our designs can be easily tuned to achieve different splitting ratios. Furthermore, we discussed the scalability of the Splitter footprint.

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“…Among them, the design of beam splitter, which splits incident wave into multiple parts with the same or different intensities, is quite demanding, it has potential applications in optical circuits and communications [31][32][33][34][35][36][37]. While the 1 × 2 optical splitters are used routinely, e.g., Y-branch [38,39] and T-branch junctions [40], the rapidly growing need for space-division multiplexing in optical transmission [41], computing [42] and sensing networks [43] translates into the need for multiport splitters [44][45][46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

One-step implementation of a deterministic SWAP gate via a shortcut to adiabatic passage

Zhang

Luo

et al. 2019

Laser Phys. Lett.

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The quantum logic gate is a basic operation in quantum computing. SWAP gates are quite useful as a type of two-qubit logic gate. In this paper, we propose a fast scheme to get a deterministic SWAP gate between two atoms in just one step. In this scheme the experimental parameters, such as evolution time, laser parameters and so on, do not need to be controlled precisely. This greatly simplifies the actual operation. Meanwhile, the strict numerical simulations show that decoherence arising from spontaneous emission and cavity decay may be allowed to some extent. What is more, the idea can be used to generate a SWAP gate between two spatially separate atoms. It is worth noting that our scheme simplifies the complex steps found in some pre-existing schemes.

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Compact 1 × N power splitters with arbitrary power ratio for integrated multimode photonics

Cited by 9 publications

References 32 publications

Controllable multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguide systems

Controllable multiple beam splitting in Hermitian and non-Hermitian symmetric coupled waveguide systems

Low-loss broadband multiport optical splitters

One-step implementation of a deterministic SWAP gate via a shortcut to adiabatic passage

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