Nonlinear Few‐Layer Antimonene‐Based All‐Optical Signal Processing: Ultrafast Optical Switching and High‐Speed Wavelength Conversion

Abstract

Exploration of ultrastable 2D material‐based optical devices toward all‐optical signal processing is attracting rising interest. As a Group‐VA monoelemental 2D material, antimonene is becoming a promising nonlinear optical material owing to its outstanding optoelectronic advantages with long‐term stability. Herein, all‐optical signal processing based on the high optical nonlinearity of antimonene is first demonstrated. Few‐layer antimonene is fabricated and decorated on the microfiber as an optical device. The device can be applied as an all‐optical Kerr switcher with an extinction ratio as high as ≈12 dB and wavelength conversion of modulated high‐speed signals at a frequency up to 18 GHz. The findings indicate that such a few‐layer antimonene‐based photonics device is applicable in nonlinear optics, which can be potentially developed for the applications of next‐generation high‐speed optical communication.

Ultrafast broadband nonlinear optical properties and excited-state dynamics of two bis-chalcone derivatives

“…The compound C1 (350 mg, 35%) was obtained by column chromatography separation. 1 Absolute ethyl alcohol (90 ml) was added to it, and the ask was heated until the mixture dissolved completely. Sodium hydroxide (10%, 5 ml) as the catalyst was added to the reaction system.…”

“…Organic nonlinear optical (NLO) materials have attracted considerable attention in recent years due to their intriguing properties, such as structural exibility, large p-conjugated systems, and biocompatibility, and are highly promising for applications in all-optical switching, optical limiting, bioimaging, and so on. [1][2][3][4][5] It is well known that the NLO response of conjugated organic materials is closely related to the structure of the molecule, such as the size of the p-conjugated system and the introduction of electron donor and electron acceptor. [6][7][8][9][10] Hence, designing novel organic chromophores exhibiting superior NLO response is of great scientic and technological interest not only for shedding light on the nonlinear light-matter interaction but also for the development of novel photonic devices.…”

Fiber all-optical light control with low-dimensional materials (LDMs): thermo-optic effect and saturable absorption

“…And uorinated phosphorene has been used to implement all-optical switches and logic gates. 14,66 Subsequently, a series of black phosphorus analogues (BPAs), such as tellurene, bismuthene, 12,82 and antimonene, 11,22,66,83 have been extensively studied for several years. They have a similar folded structure as BP and exhibit a high photothermal effect, tunable bandgap, and strong optical absorption but with high stability under ambient conditions.…”

“…Therefore, ber all-optical light control has attracted widespread research interests and many of the latest results have reported all-optical modulators, [8][9][10][11][12][13][14][15][16][17] phase shiers, 12,14,[17][18][19] logic gates, 12,14,20 and switches. 2,[5][6][7]15,18,19,[21][22][23] Meanwhile, LDMs have been a research hotspot because of their plentiful photonic and optoelectronic properties including graphene, 9,[24][25][26][27] graphene oxide, 28,29 carbon nanotubes (CNTs), [30][31][32] transition metal dichalcogenides (TMDs), [33][34][35] topological insulators (TIs), [36][37][38] black phosphorus (BP), [39][40][41] and MXenes. …”

Nonlinear Optical Study in a Set of Dibenzylideneacetone Derivatives with Potential for Optical Frequency Conversion

“…The evolution of optical communication networks demands the search and development of raw materials with particular types of nonlinear optical (NLO) properties with the potential to be used as optical communication devices. Frequency converters and optical limiters are two examples of NLO properties of interest to search for [1][2][3][4][5]. It is in this context that organic compounds have an important role as raw materials for developing photonic devices to be applied in optical communications.…”