Daniel Aloysius Nolan

Dr. Daniel Aloysius Nolan

Physics, Penn State, State College, Pennsylvania, USA
orcid
Corning Inc. retired

Research Focus & Metrics

Academic Career Length

36Years (1991-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 August 2004 in Optics Letters
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Journal Article
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DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
GBGeorge E. Berkey
George E. Berkey
MLMing-Jun Li
Ming-Jun Li
XCXin Chen
Xin Chen
WWWilliam A. Wood
William A. Wood
LZLuis A. Zenteno
Luis A. Zenteno
An elliptical-core hole assisted single-polarization fiber was designed, fabricated, and characterized. Numerical modeling based on the vectorial Maxwell equation reveals the dependence of the single-polarization bandwidth on core delta and air-hole size. Several single-polarization fibers based on this design with their single-polarization operating windows centered between 0.9 and 1.5 µm were successfully demonstrated. A correlation between fiber birefringence and single-polarization operating bandwidth is qualitatively confirmed. A single-polarization bandwidth as high as 55 nm was observed. These fibers also show very high extinction ratios of 60 dB or higher at lengths much shorter than 1 m. Other properties such as the dependence on length of the single-polarization operating window were also measured.

15 January 2005 in Optics Letters
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Journal Article
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AKAndrey E. Korolev
Andrey E. Korolev
VNVladimir N. Nazarov
Vladimir N. Nazarov
DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
CTCarlton M. Truesdale
Carlton M. Truesdale
Propagation of two orthogonally polarized time-delayed optical solitons in low-birefringence optical fiber is studied experimentally. We demonstrate soliton trapping and collisions and also the ability to control the separation and shape of soliton pulses by varying the power at the input of the fiber.

1 October 1992 in Review of Scientific Instruments
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Journal Article
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HEH. Evensen
H. Evensen
DBD. Brouchous
D. Brouchous
DDD. Diebold
D. Diebold
MDM. Doczy
M. Doczy
RFR. J. Fonck
R. J. Fonck
DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
Plasma density turbulence has been measured with the beam emission spectroscopy (BES) diagnostic system, using a low‐power neutral beam with He0 and H0 as beam species. In general, He0 (588 nm) provided the best signal‐to‐noise ratio due to its lower edge plasma background interference. Simultaneous measurements of edge density fluctuations have been made with BES and Langmuir probes; the spectra are seen to be essentially identical, and the fluctuation amplitudes from both diagnostics are in close agreement. A poloidal coherence length of about 2–4 cm was observed. Radial propagation of modes was not seen, but a lab‐frame poloidal phase velocity at r/a=0.77 of about 7×105 cm/s in the electron diamagnetic direction was observed, corresponding to m=8–75 kHz.

1 January 2021 in Journal of Non-Crystalline Solids
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Journal Article
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SMSean D. McAnany
Sean D. McAnany
KVKeith J. Veenhuizen
Keith J. Veenhuizen
AKAndrew M. Kiss
Andrew M. Kiss
JTJuergen Thieme
Juergen Thieme
DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
HJHimanshu Jain
Himanshu Jain

1 June 2020 in Optics Communications
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SRSandra Mamani Reyes
Sandra Mamani Reyes
DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
Lingyan ShiLingyan Shi
Lingyan Shi
RARobert R. Alfano
Robert R. Alfano

22 September 2021 in Frontiers in Physics
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Journal Article
Open access
DNDaniel Aloysius Nolan
Daniel Aloysius Nolan
DNDan T. Nguyen
Dan T. Nguyen
The capacity of optical fiber communications has grown exponentially since its implementation decades ago. Optical fiber amplifiers, wavelength division multiplexing, and coherent communications have all enabled discontinuous growth. Space division multiplexing is proposed as the next discontinuity. Here tens of modes rather than a single mode are utilized in the transmission. Random scattering due to index fluctuations within the optical fiber cause coupling among the modal channels thereby degrading signal transmission. Principal mode transmission overcomes this limitation. Here a set of modes arrive localized at the fiber output unscattered. We review this methodology as it relates to optical communication capacity, but also as it relates to light localization. We also review the characterization of these modes both theoretically and experimentally.