Design of bent photonic crystal fiber supporting a single polarization

Rahman, B. M. A.; Uthman, M.; Kejalakshmy, N.; Agrawal, Arti; Grattan, K. T. V.

doi:10.1364/ao.50.006505

Cited by 8 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this analysis, a Conformal Transformation [38], [39] was carried out to obtain the equivalent index of a bent PCF, and PML regions [35], [40] are introduced to absorb the leaking power. For a bent PCF, only onefold symmetry is available, and symmetry along the vertical axis is destroyed.…”

Section: Resultsmentioning

confidence: 99%

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

et al. 2012

View full text Add to dashboard Cite

A rigorous modal solution approach, based on the numerically efficient finiteelement method (FEM), has been used to design and characterize a photonic crystal fiber (PCF) with a porous air core, which has the potential for use for low-loss guidance of terahertz (THz) waves. Here, for the first time, it is reported that a large fraction of the power that is also well confined in the waveguide can be guided in the low-loss air holes, thus to reduce the overall modal loss. This novel PCF design can readily be fabricated by use of a range of techniques including stack-and-draw, extrusion, and drilling.

show abstract

Section: Resultsmentioning

confidence: 99%

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

et al. 2012

View full text Add to dashboard Cite

show abstract

“…It can be observed that field expands in the silica bridging region in between the air holes. We have shown that by introducing structural asymmetry easily birefrince of such fibre can be increased and it is even possible to design PCF which can only support a single polarization [17]. Although such a PCF can have a smaller spot-size to enhance supercontinuum generation, but coupling to standard SMF has remained a major obstacle for their wider application.…”

Section: Resultsmentioning

confidence: 99%

Rigorous characterization of photonic devices by finite element method

Rahman

Kejalakshmy

2015

SPIE Proceedings

View full text Add to dashboard Cite

A review on the characterisations of photonics devices by using the frequency domain modal solution, junction analysis and beam propagation methods and additionally time-domain approach, but all based on the numerically efficient finite element method is presented. Numerically simulated results for various photonic devices such as uniform optical waveguides, photonic crystal fibres, high-speed optical modulators, spot-size converters, compact power splitters, metalclad terahertz waveguides, photonic crystals and nonlinear acousto-optical interactions in optical waveguide are presented.

show abstract

“…Birefringence is maintained by a photonic crystal pore structure. Birefringent sensors, using radiation-resistant PCFs, may be feasible for future AdvSMR temperature monitoring (Rahman et al 2011).…”

Section: Promising Research and Developmentmentioning

confidence: 99%

Technical Readiness and Gaps Analysis of Commercial Optical Materials and Measurement Systems for Advanced Small Modular Reactors

Anheier¹,

Suter²,

Qiao³

et al. 2013

View full text Add to dashboard Cite

Energy Research and Development Roadmap and industry stakeholders by evaluating optically based instrumentation and control (I&C) concepts for advanced small modular reactor (AdvSMR) applications. These advanced designs will require innovative thinking in terms of engineering approaches, materials integration, and I&C concepts to realize their eventual viability and deployment. The primary goals of this report include:1. Establish preliminary I&C needs, performance requirements, and possible gaps for AdvSMR designs based on best-available published design data.2. Document commercial off-the-shelf (COTS) optical sensors, components, and materials in terms of their technical readiness to support essential AdvSMR in-vessel I&C systems.3. Identify technology gaps by comparing the in-vessel monitoring requirements and environmental constraints to COTS optical sensor and materials performance specifications.4. Outline a future research, development, and demonstration (RD&D) program plan that addresses these gaps and develops optical-based I&C systems that enhance the viability of future AdvSMR designs.The DOE-NE roadmap outlines RD&D activities intended to overcome technical barriers that currently limit advances in nuclear energy. As part of this strategy, DOE-NE is sponsoring research on advanced reactor supportive technologies to reduce the identified barriers. Key challenges that must be overcome include the high capital costs to develop nuclear power plants, maintaining safety performance as the reactor fleet expands, minimizing nuclear waste, and maintaining strong proliferation resistance. AdvSMR designs are a major component of this strategy, because these designs offer a number of unique advantages. The modular and small size of AdvSMR designs naturally lead to reduced capital investments and, potentially, construction savings through factory fabrication. However, new economic and technical challenges accompany the many attractive features offered by AdvSMR designs. Specifically, the modest power output of AdvSMRs does not provide the economy of scale afforded by large reactors. In addition, many of the AdvSMR designs operate at much higher temperatures than lightwater reactors and require instrumentation to withstand harsh, in-vessel environments arising from unconventional, chemically aggressive coolants and unique reactor system configurations.Addressing these I&C challenges will be critically important to the AdvSMR development program to ensure the viability and future success of advanced reactor designs. Solutions will likely be found through evolution of conventional reactor technology, and the development of entirely new concepts. Early pressure/boiling water reactors used conventional I&C technologies (e.g., thermocouples, ionchambers, strain-gauge pressure sensors) to satisfy design requirements. Because these technologies worked well in the relatively low-temperature reactor designs, the demand for alternate I&C technologies was limited. At the time, optical-based reactor monitoring concepts were g...

show abstract

Design of bent photonic crystal fiber supporting a single polarization

Cited by 8 publications

References 9 publications

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

Rigorous characterization of photonic devices by finite element method

Technical Readiness and Gaps Analysis of Commercial Optical Materials and Measurement Systems for Advanced Small Modular Reactors

Contact Info

Product

Resources

About