A Proposal for Loss Engineering in Slow-Light Photonic Crystal Waveguides

Ebnali-Heidari, Aliakbar; Prokop, Christoph; Ebnali-Heidari, Majid; Karnutsch, Christian

doi:10.1109/jlt.2015.2391196

Cited by 7 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). In fact, the PCF confinement loss has been engineered as demonstrated by [30] for any structural losses that might appear in periodic structures. Nevertheless, the material losses for both fibers (dotted dashes) that are less than 1 dB/m for most wavelengths range of interest are comparable to those of the As38Se62 and Ge10As22Se68 SIFs reported in [31].…”

Section: B Linear Parametersmentioning

confidence: 99%

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Saghaei

Moravvej-Farshi

Ebnali-Heidari

et al. 2016

IEEE J. Select. Topics Quantum Electron.

Self Cite

View full text Add to dashboard Cite

Due to the pronounced scientific and technical attention paid to mid-infrared spectral region, we focus on ultrawide mid-infrared supercontinuum generation in Αs40Se60 chalcogenide SIF and PCF-step index and photonic crystal fibersusing symmetrized split step Fourier method (S-SSFM). Simulations reveal, in response to launching 100 fs input pulses of 50kW peak powers, with near zero dispersion wavelengths centered about λ0 = 4.25 μm, into 50-mm long Αs40Se60 SIF and solid core PCF, 8.5 and 11-μm supercontinua can be achieved, respectively. Moreover, numerical results also show, when ultra-short pulses of center wavelengths λ0=12 μm are launched into those SIF and PCF, ripple free spectra as wide as 10 and 13 μm can be attained, respectively. These spectra are useful for safe spectroscopic medical imaging diagnosis such as early cancer diagnostics, and other spectroscopic applications such as gas sensing and food quality control.

show abstract

Section: B Linear Parametersmentioning

confidence: 99%

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Saghaei

Moravvej-Farshi

Ebnali-Heidari

et al. 2016

IEEE J. Select. Topics Quantum Electron.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Slow light with a much slower group velocity makes it possible to delay and temporarily store light in all-optical systems [3][4][5][6]. Among all the approaches to realize slow light, photonic crystal waveguide (PCW) has drawn much attention as it supports room temperature operation and is compatible with on-chip integration [7][8][9][10][11][12][13][14][15][16]. However, the performance of the conventional photonic crystal (PC) systems is very vulnerable to the backscattering loss induced by disorders or defects [17,18].…”

Section: Introductionmentioning

confidence: 99%

Unidirectional Slow Light Transmission in Heterostructure Photonic Crystal Waveguide

Zhang

2018

Applied Sciences

View full text Add to dashboard Cite

In conventional photonic crystal systems, extrinsic scattering resulting from random manufacturing defects or environmental changes is a major source of loss that causes performance degradation, and the backscattering loss is amplified as the group velocity slows down. In order to overcome the limitations in slow light systems, we propose a backscattering-immune slow light waveguide design. The waveguide is based on an interface between a square lattice of magneto-optical photonic crystal with precisely tailored rod radii of the first two rows and a titled 45 degrees square lattice of Alumina photonic crystal with an aligned band gap. High group indices of 77, 68, 64, and 60 with the normalized frequency bandwidths of 0.444%, 0.481%, 0.485%, and 0.491% are obtained, respectively. The corresponding normalized delay-bandwidth products remain around 0.32 for all cases, which are higher than previously reported works based on rod radius adjustment. The robustness for the edge modes against different types of interfacial defects is observed for the lack of backward propagation modes at the same frequencies as the unidirectional edge modes. Furthermore, the transmission direction can be controlled by the sign of the externally applied magnetic field normal to the plane.

show abstract

Optical Properties of Photonic Crystal Fibers

Ghunawat

Jain

Kumari

et al. 2018

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

A Proposal for Loss Engineering in Slow-Light Photonic Crystal Waveguides

Cited by 7 publications

References 40 publications

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Unidirectional Slow Light Transmission in Heterostructure Photonic Crystal Waveguide

Optical Properties of Photonic Crystal Fibers

Contact Info

Product

Resources

About

A Proposal for Loss Engineering in Slow-Light Photonic Crystal Waveguides

Cited by 7 publications

References 40 publications

Ultra-Wide Mid-Infrared Supercontinuum Generation in As40Se60Chalcogenide Fibers: Solid Core PCF Versus SIF

Ultra-Wide Mid-Infrared Supercontinuum Generation in As40Se60Chalcogenide Fibers: Solid Core PCF Versus SIF

Unidirectional Slow Light Transmission in Heterostructure Photonic Crystal Waveguide

Optical Properties of Photonic Crystal Fibers

Contact Info

Product

Resources

About

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF