Search Results - "Tamura, R K"

Fundamentals of stable continuum generation at high repetition rates by Tamura, K.R., Kuhota, H., Nakazawa, M.

“…A continuum generated from highly nonlinear seed pulses (N/spl Gt/1) propagating in a medium with only self-phase modulation (SPM) or with SPM and anomalous…”
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Femtosecond soliton generation over a 32-nm wavelength range using a dispersion-flattened dispersion-decreasing fiber by Tamura, K.R., Nakazawa, H.

“…The compression characteristics at femtosecond durations are compared for dispersion-decreasing fibers (DDF's) constructed out of standard step index fibers…”
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A polarization-maintaining pedestal-free femtosecond pulse compressor incorporating an ultrafast dispersion-imbalanced nonlinear optical loop mirror by Tamura, K.R., Nakazawa, M.

“…We report a polarization-maintaining and dispersion-flattened pulse compressor based on a dispersion decreasing fiber (DDF) for compression and a…”
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Spectral-smoothing and pedestal reduction of wavelength tunable quasi-adiabatically compressed femtosecond solitons using a dispersion-flattened dispersion-imbalanced loop mirror by Tamura, K.R., Nakazawa, M.

“…A dispersion-flattened dispersion imbalanced nonlinear optical loop mirror is used to smooth the spectrum and reduce the pedestal of tunable femtosecond…”
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Adaptive dispersion slope equalizer using a nonlinearly chirped fiber Bragg grating pair with a novel dispersion detection technique by Inui, T., Komukai, T., Nakazawa, M., Suzuki, K., Tamura, K.R., Uchiyama, K., Morioka, T.

“…We realized the first adaptive-dispersion equalizer that equalizes dispersion over a wide wavelength range (6 nm) in the zero-dispersion wavelength region of a…”
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A prospective study of the association between isolated fetal pyelectasis and chromosomal abnormality by Wickstrom, Elizabeth A., Thangavelu, Maya, Parilla, Barbara V., Tamura, Ralph K., Sabbagha, Rudy E.

“…To determine the incidence of chromosomal abnormalities among fetuses with isolated pyelectasis. Between March 1991 and March 1994, 121 cases of isolated fetal…”
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Modulation requirements and transmission characteristics of electrically tunable mode-locked lasers with fiber Bragg gratings by Tamura, K.R., Komukai, T., Morioka, T.

“…In this letter, we investigate the external modulation and transmission characteristics at 2.48832 Gb/s of electrically tunable mode-locked semiconductor…”
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Placenta accreta is associated with elevated maternal serum alpha-fetoprotein by Kupferminc, M J, Tamura, R K, Wigton, T R, Glassenberg, R, Socol, M L

“…To determine whether placenta accreta/percreta/increta is associated with elevation of second-trimester maternal serum alpha-fetoprotein (MSAFP) levels. We…”
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Isolated fetal pyelectasis: assessment of risk for postnatal uropathy and Down syndrome by Wickstrom, E., Maizels, M., Sabbagha, R. E., Tamura, R. K., Cohen, L. C., Pergament, E.

“…Eighty‐two consecutive fetuses with ultrasound evidence of isolated pyelectasis (defined as dilatation in the anteroposterior renal pelvic dimension of ≥ 4 mm)…”
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A discretely tunable mode-locked laser with 32 wavelengths and 100-GHz channel spacing using an arrayed waveguide grating by Tamura, K.R., Inoue, Y., Sato, K., Komukai, T., Sugita, A., Nakazawa, M.

“…We demonstrate a tunable mode-locked laser (time-to-wavelength mapped laser) with a 100-GHz channel spacing (1535.5-1560.5 nm) that uses a 32-wavelength…”
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A new optical routing technique with a subcarrier clock controlled wavelength converter by Tamura, K.R., Komukai, T., Nakazawa, W.

“…We demonstrate wavelength conversion and routing at 2.5 Gb/s over 100-km fiber links using a wavelength converter based on a time-to-wavelength mapped…”
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The clinical significance of a single umbilical artery as an isolated finding on prenatal ultrasound by Parilla, Barbara V., Tamura, Ralph K., MacGregor, Scott N., Geibel, Leslie J., Sabbagha, Rudy E.

“…To evaluate the perinatal outcome in fetuses with single umbilical artery detected on targeted prenatal ultrasound without other anomalies. During a 3.5-year…”
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Isolated choroid plexus cyst(s): An indication for amniocentesis by Kupferminc, Michael J., Tamura, Ralph K., Sabbagha, Rudy E., Parilla, Barbara V., Cohen, Leeber S., Pergament, Eugene

“…Objective: Our purpose was to prospectively evaluate the risk of chromosomal abnormalities associated with isolated choroid plexus cyst(s) in gravid women…”
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Lack of effect of antenatal indomethacin on fetal cerebral blood flow by Parilla, Barbara V., Tamura, Ralph K., Cohen, Leeber S., Clark, Elizabeth

“…OBJECTIVE: Our purpose was to investigate fetal cerebral blood flow and the incidence of intraventricular hemorrhage in patients undergoing tocolysis with…”
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Immunoreactive tumor necrosis factor-α is elevated in maternal plasma but undetected in amniotic fluid in the second trimester by Kupferminc, Michael J., Peaceman, Alan M., Wigton, Thomas R., Tamura, Ralph K., Rehnberg, Karen A., Socol, Michael L.

“…Objective: We investigated the participation of the cellular arm of the immune system in adaptation to pregnancy by assessing plasma and amniotic fluid levels…”
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640-Gbit/s optical TDM transmission over 92 km through a dispersion-managed fiber consisting of single-mode fiber and "reverse dispersion fiber" by Yamamoto, T., Yoshida, E., Tamura, K.R., Yonenaga, K., Nakazawa, M.

“…A 640-Gbit/s optical time division multiplexed signal was successfully transmitted over a 92-km zero-dispersion-flattened transmission line. The transmission…”
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Association of parvovirus infection with isolated fetal effusions by Parilla, B V, Tamura, R K, Ginsberg, N A

“…The association of parvovirus B19 infection and hydrops fetalis is well known. However, the association of parvovirus and fetal pleural or pericardial…”
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Interaction of soliton with sinusoidal wave packet by Haus, H.A., Khatri, F.I., Wong, W.S., Ippen, E.P., Tamura, K.R.

“…The interaction of a soliton of the Nonlinear Schrodinger Equation (NSE) with a weak sinusoidal wave packet is treated analytically. The second-order soliton…”
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Neonatal morbidity after preterm delivery in the presence of documented lung maturity by Wigton, T R, Tamura, R K, Wickstrom, E, Atkins, V, Deddish, R, Socol, M L

“…Our purpose was to determine the incidence of significant neonatal morbidity in fetuses with documented pulmonary maturity delivered before 37 weeks'…”
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Antepartum management of triplet gestations by Peaceman, A M, Dooley, S L, Tamura, R K, Socol, M L

“…We evaluated an alternative approach to the management of triplet gestations that did not include home uterine monitoring, prophylactic tocolysis, or routine…”
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