Fiber interferometers

Agrawal, Govind P.

doi:10.1016/b978-0-12-817040-3.00009-2

Cited by 6 publications

(13 citation statements)

References 133 publications

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“…Four wave mixing (FWM) is an ultrafast nonlinear optical phenomenon originating from χ (3) of a nonlinear medium and finds application in optical telecommunications, such as wavelength conversion, supercontinuum generation, optical parametric amplification, and optical switching due to its ultrafast attributes. − Owing to its high optical nonlinearity and tunable semiconducting properties, Ti 3 C 2 T x emerges as a strong candidate for ultrafast FWM demonstrations. A recent investigation involving Ti 3 C 2 T x -incorporated tapered fiber, allowing for symmetric evanescent field interaction, has demonstrated nonlinear enhancement through the FWM process .…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Laser Field Interaction with MXene Coated on the Side Surface of Optical Fibers for Ultrafast Nonlinear Switches

Uddin,

Debnath,

Kim

et al. 2024

ACS Appl. Mater. Interfaces

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In recent years, there has been significant interest in researching ultrafast nonlinear optical phenomena involving lightmatter interactions in two-dimensional (2D) materials, owing to their potential applications in optics and photonics. MXene, a recently developed 2D material, has garnered considerable attention due to its graphene-like properties and highly tunable electronic/optical characteristics. Herein, we demonstrate ultrafast all-optical switches based on four-wave-mixing (FWM) utilizing the nonlinear optical property of MXene Ti 3 C 2 T x . In order to realize the device, we deposited multilayered Ti 3 C 2 T x in the form of a supernatant solution onto the polished surface of a side-polished optical fiber, enabling the interaction of Ti 3 C 2 T x with the asymmetric evanescent field of the incident input. We systematically characterized the nonlinear optical responses derived from the Ti 3 C 2 T x layers. The fabricated device exhibits notable performance metrics, an enhancement of the extinction ratio, and a conversion efficiency of the newly generated signal, displaying 5.3 and 5.2 dB, respectively. Additionally, the device operates at high modulation frequencies, reaching up to 20 GHz, and demonstrates high-resolution detuning with channel distances of up to 15 nm. Our findings highlight the potential of MXene-based materials for ultrafast optical data management systems.

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Section: Introductionmentioning

confidence: 99%

Asymmetric Laser Field Interaction with MXene Coated on the Side Surface of Optical Fibers for Ultrafast Nonlinear Switches

Uddin,

Debnath,

Kim

et al. 2024

ACS Appl. Mater. Interfaces

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“…However, we recognised that a moderate level of soliton order is required in addition to a comparable soliton compression distance and coupling length. A soliton order of more than one is necessary, because only high-order solitons exhibit the soliton compression phenomenon [23]. On the other hand, very high-order solitons (above 10) do not support the effective self-trapping process due to their splitting into numerous fundamental solitonic components during the soliton fission process [24].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, very high-order solitons (above 10) do not support the effective self-trapping process due to their splitting into numerous fundamental solitonic components during the soliton fission process [24]. Both the soliton order N and the soliton compression distance z comp are dependent on the parameters of the fibre and of the exciting pulses according to the following relations [23]. The first one has the form…”

Section: Introductionmentioning

confidence: 99%

“…where P 0 is the pulse peak power, γ is the nonlinear coefficient, T 0 is the pulse duration, and β 2 is the group velocity dispersion. When N > 2, a high-order soliton is generated, which periodically recovers after a soliton period z 0 , defined as a function of pulse duration and group velocity dispersion expressed by the following relation [23]:…”

Section: Introductionmentioning

confidence: 99%

“…The soliton compression distance is a non-trivial function of the above-mentioned quantities. However, in the case of N > 10, it is possible to approximate it by the following equation [23]:…”

Section: Introductionmentioning

confidence: 99%

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Applicable ultrafast all-optical switching by soliton self-trapping in high index contrast dual-core fibre

Longobucco

Stajanča

Curilla³

et al. 2020

Laser Phys. Lett.

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Improvement potential of ultrafast all-optical switching by soliton self-trapping using all-solid dual-core fibers with high index contrast was analyzed numerically. Study of the femtosecond nonlinear propagation was performed based on the coupled generalized nonlinear Schrödinger equations considering three different fiber architectures: homogeneous cladding all-solid, photonic crystal air-glass and photonic crystal all-solid. The structure geometries of the all three alternatives were optimized in order to support high-contrast switching performance in C-band considering 100 fs level pulse widths. Comparing the three different structural alternatives, the lowest switching energies at common excitation parameters (1700 nm and 70 fs pulses) were predicted for the homogeneous cladding dual-core structure. The further optimization of the excitation wavelength and pulse width resulted in lower switching energies at simultaneous improvement of the switching contrasts at combination of 1500 nm,75 fs pulses and at 43 mm fiber length. The spectral aspect in this optimized case expresses broadband and uniform switching character spanning over 200 nm and exceeding 30 dB contrast at more frequency channels.

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From Non-linear Optics to Next-generation Imaging: A Journey through Non-linear Imaging Techniques

Rezafirouz

2023

Preprint

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Nonlinear optics (NLO) offers transformative capabilities in the realm of imaging, particularly within the field of microscopy. This review provides an exhaustive insight into the principles, techniques, and advancements of nonlinear optical imaging. Initially, we define the core concept of nonlinearity and its crucial role in optics. The survey then delves into some of the most prominent NLO imaging techniques in microscopy that have heralded new dimensions in imaging capabilities, especially in surmounting the diffraction limit. The relationship between contrast enhancement and signal-to-noise ratio (SNR) is detailed, with a spotlight on the profound implications of improved SNR on image clarity. Our review underscores the pivotal applications of NLO in biological and medical imaging, elucidating its transformative impact across various disciplines. The inevitable technical constraints and limitations of nonlinear imaging are also addressed, complemented by a discussion on potential strategies to overcome such barriers. The future trajectory of nonlinear imaging is anticipated to be profound, with advancements paving the way for groundbreaking developments. A special section is dedicated to revealing the symbiotic relationship between artificial intelligence and NLO in amplifying the scientific and medical possibilities. In summation, this review offers a panoramic view of its current status and future prospects.

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Fiber interferometers

Cited by 6 publications

References 133 publications

Asymmetric Laser Field Interaction with MXene Coated on the Side Surface of Optical Fibers for Ultrafast Nonlinear Switches

Asymmetric Laser Field Interaction with MXene Coated on the Side Surface of Optical Fibers for Ultrafast Nonlinear Switches

Applicable ultrafast all-optical switching by soliton self-trapping in high index contrast dual-core fibre

From Non-linear Optics to Next-generation Imaging: A Journey through Non-linear Imaging Techniques

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