Progress on low loss photonic crystal fibers

Zhou, Jian; Tajima, Katsusuke; Nakajima, Kazuhide; Kurokawa, Kenji; Fukai, Chisato; Matsui, Takashi; Sankawa, Izumi

doi:10.1016/j.yofte.2004.12.002

“…Surface roughness reduction can be achieved by improving the fabrication procedures, using different glass choices and surface treatments [7] and reducing the thermal history of the glass. Using similar approaches the losses of solid core photonic crystal fibers, which also suffer from surface scattering, have been reduced to 0.18 dB/km [8,9], very close to the fundamental glass limit (see Figure 2). …”

Section: Photonic Band Gap Fibersmentioning

confidence: 94%

Recent advances in microstructured fibers for laser delivery and generation

Hayes

¹

,

Petrovich

²

,

Poletti

³

et al. 2010

SPIE Proceedings

1

0

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…Those ions penetrate the glass material during the preform fabrication and the fiber drawing process [32].…”

Section: Sources Of Light Attenuation In Pcfsmentioning

confidence: 99%

Novel aspects of pulse propagation in photonic crystal fibers

Stark

¹

,

Podlipensky

²

,

Russell

³

2011

SPIE Proceedings

0

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…At this point we would like to address a possible limitation of our proposed PCF structure associated with the existence of the additional air-holes in the central region of the fiber. The inclusion of these air-holes is expected to give rise to an additional loss mechanism, known as scattering loss [6]. This additional loss mechanism is unavoidable in this type of PCF and surely will affect the overall loss performance of the proposed structure.…”

Section: −1mentioning

confidence: 99%

“…As the attenuation of index-guiding PCFs has been constantly reduced up to a level of 0.28 dB/km at 1.55 μm wavelength [6], a great vision regarding the use of PCFs has emerged, that is apart of realizing optical components, as platforms for transmitting information [4,7,8] especially in wide-band high speed transmission systems. In such a case, both the controllability of the chromatic dispersion, and the enlargement of the effective mode area are very crucial factors in terms of the quality of information transmission.…”

Section: Introductionmentioning

confidence: 99%

The role of artificial defects for engineering large effective mode area, flat chromatic dispersion, and low leakage losses in photonic crystal fibers: Towards high speed reconfigurable transmission platforms

Florous

¹

,

Saitoh

²

,

Koshiba

³

2006

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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Progress on low loss photonic crystal fibers

Cited by 51 publications

References 14 publications

Recent advances in microstructured fibers for laser delivery and generation

Recent advances in microstructured fibers for laser delivery and generation

Novel aspects of pulse propagation in photonic crystal fibers

The role of artificial defects for engineering large effective mode area, flat chromatic dispersion, and low leakage losses in photonic crystal fibers: Towards high speed reconfigurable transmission platforms

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