scholarly journals A Novel Phase-Locking-Free Phase Sensitive Amplifier based Regenerator

2015 ◽  
Author(s):  
N. K. Kjøller ◽  
K. M. Røge ◽  
P. Guan ◽  
H. C. H. Mulvad ◽  
M. Galili ◽  
...  
Keyword(s):  
Phase Locking ◽  
Phase Sensitive

scholarly journals A Novel Phase-Locking-Free Phase Sensitive Amplifier-Based Regenerator

2016 ◽  
Vol 34 (2) ◽  
pp. 643-652 ◽  
Author(s):  
Niels-Kristian Kjoller ◽  
Kasper Meldgaard Roge ◽  
Pengyu Guan ◽  
Hans Christian Hansen Mulvad ◽  
Michael Galili ◽  
...  
Keyword(s):  
Phase Locking ◽  
Phase Sensitive

Phase locking and carrier extraction schemes for phase sensitive amplification

2010 ◽  
Author(s):  
Stylianos Sygletos ◽  
Ruwan Weerasuriya ◽  
Selwan K. Ibrahim ◽  
Fatima Gunning ◽  
Richard Phelan ◽  
...  
Keyword(s):  
Phase Locking ◽  
Phase Sensitive ◽  
Phase Sensitive Amplification ◽  
Carrier Extraction

scholarly journals Pump phase-locking to fiber-transmitted QPSK phase-conjugated twin waves for non-degenerate phase-sensitive amplifier repeaters

2017 ◽  
Vol 6 (10) ◽  
pp. 566-571 ◽  
Author(s):  
Yasuhiro Okamura ◽  
Masashi Abe ◽  
Kotaro Kondo ◽  
Takumi Okabe ◽  
Takushi Kazama ◽  
...  
Keyword(s):  
Phase Locking ◽  
Phase Sensitive

scholarly journals A novel phase sensitive amplifier based QPSK regenerator without active phase-locking

2015 ◽  
Author(s):  
N. K. Kjoller ◽  
F. Da Ros ◽  
K. M. Roge ◽  
P. Guan ◽  
M. Galili ◽  
...  
Keyword(s):  
Phase Locking ◽  
Active Phase ◽  
Phase Sensitive

scholarly journals Optical pump phase locking to a carrier wave extracted from phase-conjugated twin waves for phase-sensitive optical amplifier repeaters

2016 ◽  
Vol 24 (23) ◽  
pp. 26300 ◽  
Author(s):  
Yasuhiro Okamura ◽  
Masashi Abe ◽  
Kotaro Kondo ◽  
Yuya Ohmichi ◽  
Takushi Kazama ◽  
...  
Keyword(s):  
Phase Locking ◽  
Optical Amplifier ◽  
Carrier Wave ◽  
Optical Pump ◽  
Phase Sensitive

Ultrastructural identification of three types of sensory setae on copepod antennae

1995 ◽  
Vol 53 ◽  
pp. 956-957
Author(s):  
T. M. Weatherby ◽  
P.H. Lenz
Keyword(s):  
Phase Locking ◽  
Membrane Surface ◽  
Reaction Times ◽  
High Sensitivity ◽  
Structural Features ◽  
Calanoid Copepods ◽  
Marine Food Webs ◽  
Dendritic Membrane ◽  
Ultrastructural Characterization

Crustaceans, as well as other arthropods, are covered with sensory setae and hairs, including mechanoand chemosensory sensillae with a ciliary origin. Calanoid copepods are small planktonic crustaceans forming a major link in marine food webs. In conjunction with behavioral and physiological studies of the antennae of calanoids, we undertook the ultrastructural characterization of sensory setae on the antennae of Pleuromamma xiphias.Distal mechanoreceptive setae exhibit exceptional behavioral and physiological performance characteristics: high sensitivity (<10 nm displacements), fast reaction times (<1 msec latency) and phase locking to high frequencies (1-2 kHz). Unusual structural features of the mechanoreceptors are likely to be related to their physiological sensitivity. These features include a large number (up to 3000) of microtubules in each sensory cell dendrite, arising from or anchored to electron dense rods associated with the ciliary basal body microtubule doublets. The microtubules are arranged in a regular array, with bridges between and within rows. These bundles of microtubules extend far into each mechanoreceptive seta and terminate in a staggered fashion along the dendritic membrane, contacting a large membrane surface area and providing a large potential site of mechanotransduction.

Symmetry breaking in convergent-beam diffraction

1989 ◽  
Vol 47 ◽  
pp. 480-481
Author(s):  
D.J. Eaglesham
Keyword(s):  
Symmetry Breaking ◽  
Point Group ◽  
X Ray Diffraction ◽  
Multiple Diffraction ◽  
Space Groups ◽  
Atomic Displacements ◽  
Small Probe ◽  
Phase Sensitive ◽  
Convergent Beam

Convergent Beam Electron Diffraction is now almost routinely used in the determination of the point- and space-groups of crystalline samples. In addition to its small-probe capability, CBED is also postulated to be more sensitive than X-ray diffraction in determining crystal symmetries. Multiple diffraction is phase-sensitive, so that the distinction between centro- and non-centro-symmetric space groups should be trivial in CBED: in addition, the stronger scattering of electrons may give a general increase in sensitivity to small atomic displacements. However, the sensitivity of CBED symmetry to the crystal point group has rarely been quantified, and CBED is also subject to symmetry-breaking due to local strains and inhomogeneities. The purpose of this paper is to classify the various types of symmetry-breaking, present calculations of the sensitivity, and illustrate symmetry-breaking by surface strains.CBED symmetry determinations usually proceed by determining the diffraction group along various zone axes, and hence finding the point group. The diffraction group can be found using either the intensity distribution in the discs

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