Design and implementation of an integrated optical coupler by femtosecond laser written-waveguides in LiNbO3

Presti, Damián; Guarepi, Valentín Luis; Videla, Fabiàn; Torchia, G. A.

doi:10.1016/j.optlaseng.2019.105860

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…In contrast to Type-I-based waveguides, Type-II-based waveguides generally show better thermal stability and excellent preservation of original optical properties. Although it is not simple, curved and branched waveguide channels have been fabricated based on double-line geometries in crystals [38][39][40][41] , as schematically illustrated in Fig. 4(a).…”

Section: Variability -Design Prototypes For Nonlinear Waveguide Geomementioning

confidence: 99%

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Jia¹,

Wang²,

Chen³

2020

Opto-Electronic Advances

142

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Optical waveguides are far more than mere connecting elements in integrated optical systems and circuits. Benefiting from their high optical confinement and miniaturized footprints, waveguide structures established based on crystalline materials, particularly, are opening exciting possibilities and opportunities in photonic chips by facilitating their on-chip integration with different functionalities and highly compact photonic circuits. Femtosecond-laser-direct writing (FsLDW), as a true three-dimensional (3D) micromachining and microfabrication technology, allows rapid prototyping of on-demand waveguide geometries inside transparent materials via localized material modification. The success of FsLDW lies not only in its unsurpassed aptitude for realizing 3D devices but also in its remarkable material-independence that enables cross-platform solutions. This review emphasizes FsLDW fabrication of waveguide structures with 3D layouts in dielectric crystals. Their functionalities as passive and active photonic devices are also demonstrated and discussed.

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Section: Variability -Design Prototypes For Nonlinear Waveguide Geomementioning

confidence: 99%

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Jia¹,

Wang²,

Chen³

2020

Opto-Electronic Advances

142

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“…For example, an all-in-fiber optofluidic sensor has been fabricated [42], as shown in Figure 3(a-c), using femtosecond-laser-assisted chemical etching; meanwhile, femtosecond two-photon direct laser writing (DLW) has been used to manufacture multi-lens objectives at the top of optical fiber [43]. Furthermore, evanescent wave couplers have been fabricated using femtosecond laser micromachining [44], and optical nanoresonators could be developed using femtosecond laser ablation [45]. A photonic integration platform could be built using femtosecond laser technology [46], and fiber Bragg gratings could be raised in a multicore fiber using the point-by-point inscription technique [47].…”

Section: Manufacturing and Applications Of Optical Devicesmentioning

confidence: 99%

Recent Advances in Femtosecond Laser Fabrication: From Structures to Applications

Wen¹,

Yu²,

Zhang³

et al. 2021

IEEE Open J. Nanotechnol.

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Femtosecond laser processing is fast becoming a pervasive method for fabricating micro/nanostructures because it can be used to produce micro/nanostructures on myriads of materials with high precision and resolution, requires little control over environmental conditions, and is simple to implement. Here, we review recent developments in the use of femtosecond lasers for the fabrication of micro/nanostructures through ablation and two-photon polymerization (TPP). Moreover, the applications of some of the fabricated micro/nanostructures are also discussed. We highlight the advantages of femtosecond laser processing by explaining the underlying principles of laser ablation and TPP. We also show the use of this method to fabricate new devices with outstanding performance in several application realm, such as sensors, optical devices, microfluidic chips, and soft robotics.

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“…[7,8]. Specifically, fabrication of waveguide based microstructures in nonlinear crystals like LiNbO 3 , KDP, KD*P, etc has been attracted great attention because of the promising potential application as optical coupler [9], beam splitter [10], fork grating [11], on-chip nonlinear optical processing, quantum information processing, etc. Femtosecond laser based waveguide fabrication provides feasibility towards development of both double-line waveguides [12] and depressed cladding waveguides [13] inside transparent materials including LiNbO 3 crystals respectively.…”

Section: Introductionmentioning

confidence: 99%

Intensity modulator based on femtosecond laser assisted waveguide fabrication inside X-cut LiNbO₃ crystal

Ghar

Sanyogita

Das

et al. 2019

2019 Workshop on Recent Advances in Photonics (WRAP)

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This work represents a particular application of waveguide fabricated by femtosecond laser micromachining technology. More specifically, we report the development of an optical modulator based on the fabrication of single mode optical waveguide structures buried in X-cut lithium niobate crystal with the femtosecond laser direct writing method. Here, change in refractive index profile is measured using near field intensity profile measurement method at optimized writing conditions. It has been observed that the change refractive index (Δn) is in the range of 10 -4 . Finally, the behavior of femtosecond written waveguides as an intensity modulator at 632.8 nm and 1550 nm under the influence of an external electric field is analyzed by pattering electrode structures on the substrate respectively.

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Design and implementation of an integrated optical coupler by femtosecond laser written-waveguides in LiNbO3

Cited by 9 publications

References 18 publications

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Recent Advances in Femtosecond Laser Fabrication: From Structures to Applications

Intensity modulator based on femtosecond laser assisted waveguide fabrication inside X-cut LiNbO₃ crystal

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Design and implementation of an integrated optical coupler by femtosecond laser written-waveguides in LiNbO3

Cited by 9 publications

References 18 publications

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Femtosecond laser direct writing of flexibly configured waveguide geometries in optical crystals: fabrication and application

Recent Advances in Femtosecond Laser Fabrication: From Structures to Applications

Intensity modulator based on femtosecond laser assisted waveguide fabrication inside X-cut LiNbO3 crystal

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Product

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Intensity modulator based on femtosecond laser assisted waveguide fabrication inside X-cut LiNbO₃ crystal