(INVITED) Optimized optical fiber poling configurations

Lucia, Francesco De; Sazio, Pier J. A.

doi:10.1016/j.omx.2019.100016

Cited by 7 publications

(28 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cathode-less configuration for poling optical fibers, presented by Margulis et al in 2009, was adopted until 2014. At that time, De Lucia et al presented a new technique of thermal poling of silica fibers, called "electrostatic induction" [42,43]. The setup to realize the induction poling process is reported in Figure 3a.…”

Section: Induction Polingmentioning

confidence: 99%

Section: Induction Polingmentioning

confidence: 99%

“…(b) Cross section of a twin-hole silica fiber poled via induction poling technique. The depletion regions are visualized by means of a process of decorative etching in HF acid for 1 min [42,43]. Figure 3a is periodically exposed to ultraviolet (UV) light with the objective of obtaining the quasi-phase matching (QPM) condition between the pump (1550 nm) and the second harmonic generation (SHG) light (775 nm).…”

Section: Induction Polingmentioning

confidence: 99%

“…Also shown is the setup for the characterization of the SHG signal generated by the periodically poled fiber. (b) SHG spectra of induction poled fibers characterized by two different QPM periods of UV erasure [43].…”

Section: Induction Polingmentioning

confidence: 99%

See 3 more Smart Citations

Thermal Poling of Optical Fibers: A Numerical History

Lucia

Sazio

2020

Micromachines

Self Cite

View full text Add to dashboard Cite

This review gives a perspective of the thermal poling technique throughout its chronological evolution, starting in the early 1990s when the first observation of the permanent creation of a second order non-linearity inside a bulk piece of glass was reported. We then discuss a number of significant developments in this field, focusing particular attention on working principles, numerical analysis and theoretical advances in thermal poling of optical fibers, and conclude with the most recent studies and publications by the authors. Our latest works show how in principle, optical fibers of any geometry (conventional step-index, solid core microstructured, etc) and of any length can be poled, thus creating an advanced technological platform for the realization of all-fiber quadratic non-linear photonics.

show abstract

Section: Induction Polingmentioning

confidence: 99%

Section: Induction Polingmentioning

confidence: 99%

Section: Induction Polingmentioning

confidence: 99%

Section: Induction Polingmentioning

confidence: 99%

See 2 more Smart Citations

Thermal Poling of Optical Fibers: A Numerical History

Lucia

Sazio

2020

Micromachines

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, many attempts have been undertaken during the last two decades to induce the second‐order optical nonlinearity in glasses by forming non‐centrosymmetric nanocrystals in a bulk glass, by creating multilayer structure or by using various poling methods. Optical or thermal poling with high voltage DC‐electric field applied to a glass at elevated temperatures up to T g to dissociate and displace charges inside the glass matrix in electric field direction and then frozen of its for breaking the glass’ isotropic nature are most commonly used . All‐optical poling based on simultaneous irradiation of the sample by 1 ω and 2 ω photons can also be used for obtaining second‐order nonlinearities in various glasses, including chalcogenide systems .…”

Section: Introductionmentioning

confidence: 99%

Intrinsic second‐order nonlinearity in chalcogenide glasses containing HgI₂

et al. 2020

View full text Add to dashboard Cite

Frequency conversion using nonlinear optical (NLO) crystals is widely used in advanced photonic technologies to produce coherent light in the spectral regions where the available laser sources are missing. Isotropic glasses usually do not show second order nonlinear processes like second harmonic or difference frequency generation (SHG, DFG) except for temporarily induced anisotropy under external stimuli. Here, we show that a HgI2–Ga2S3–GeS2 homogeneous glass exhibits a strong intrinsic SHG response comparable with that of the well‐known NLO single crystal LiNbO3. The origin of this extremely rare phenomenon seems to be noncentrosymmetric bent HgI2 molecules embedded in a sulfide glassy host. Taking into account the unique properties of chalcogenide glasses (wide IR transmission, low phonon density, unlimited ability to be modified changing the appropriate glass properties, fiber drawing and thin layer design), the observed phenomenon opens up the possibility of creating fundamentally new devices for mid‐IR photonics.

show abstract

Characterization of the microstructures of specialty optical fibers for electric-field sensing by propagation-based x-ray phase-contrast microtomography

Colaço¹,

Camara²,

Nogueira³

et al. 2021

Meas. Sci. Technol.

View full text Add to dashboard Cite

In this work, we present a quantitative (statistical) 3D morphological characterization of optical fibers used in electric field sensing. The characterization technique employs propagation-based X-ray phase-contrast microcomputed tomography (micro-CT). Particularly, we investigate specialty optical fibers that contain microstructured holes that are electrooptically modified by thermal poling to induce second-order nonlinear effects (SONE). The efficiency of SONE is reflected in the characterization parameter V π , which is highly dependent on the dimensions of the fiber. The fiber microstructures must be uniform to allow the fabrication of reproducible devices. The results obtained using the micro-CT technique showed that an uncertainty of ±1.7% arises in the determination of the expected value of the voltage that causes a change in the phase of the electromagnetic wave equal to π rad (V π ), showing a great advantage when it is compared with other techniques e.g. SEM, which would need at least 1000 images of the crosssection of the optical fiber taken in different points making the process more expensive and time consuming.

show abstract

(INVITED) Optimized optical fiber poling configurations

Cited by 7 publications

References 42 publications

Thermal Poling of Optical Fibers: A Numerical History

Thermal Poling of Optical Fibers: A Numerical History

Intrinsic second‐order nonlinearity in chalcogenide glasses containing HgI₂

Characterization of the microstructures of specialty optical fibers for electric-field sensing by propagation-based x-ray phase-contrast microtomography

Contact Info

Product

Resources

About

(INVITED) Optimized optical fiber poling configurations

Cited by 7 publications

References 42 publications

Thermal Poling of Optical Fibers: A Numerical History

Thermal Poling of Optical Fibers: A Numerical History

Intrinsic second‐order nonlinearity in chalcogenide glasses containing HgI2

Characterization of the microstructures of specialty optical fibers for electric-field sensing by propagation-based x-ray phase-contrast microtomography

Contact Info

Product

Resources

About

Intrinsic second‐order nonlinearity in chalcogenide glasses containing HgI₂