English/Japanese
Last updated: November 18, 2010
Laboratory Resources
Resources for Experimental Research
- All-optical gates and circuits
- Delayed-interference signal-wavelength convertors (DISC),
40Gb/s, 100-200 Gb/s, keep updating.
- DISC-loop pulse generator, repetition frequency= 10-40 GHz,
output pulse width= 1-5 ps (i.e., 40-160 Gb/s after optical Mux), keep
updating.
- Ultrafast, nonlinear, monolithically integrated
photonic-crystal/Quantum-dot waveguides (nation-wide collaboration
research with Univ. Tsukuba, AIST, NEC R&D, etc., FY2005-2007).
- Signal sources
- Actively-mode-locked fiber-ring laser, tunable frequency
4-12.5 GHz, pulse width= 2 ps, tunable wavelength 1535-1560 nm, from Pritel, Inc., Chicago, USA.
- Passively-mode-locked fiber-ring laser, nominal pulse width=
250 fs, 40 MHz, 1555 nm, from Calmar
Optcom
Inc., Sunnyvale, California, USA.
- Optical fiber amplifiers, #1-#4, high power and low
dispersion, from Pritel, Inc.(Upper)
- Adiabatic soliton pulse compressors #1 and #2, to less than
500 fs.(lower)
- Optical time-division multiplexers, #1, low loss, low
dispersion, high precision, high stability, from Pritel, Inc.
- Handmade optical multiplexers, #1, low loss, low dispersion,
high precision, high stability.
- Handmade optical fiber amplifier, #1, high power and low
dispersion.
- Diode-pumped mode-locked
Ti:S lasers and ultrabroadband optical
parametric oscillator systems (pulse width= 130 fs, repetition
rate= 80MHz, wavelength 1,100-2,200 nm, Spectra Physics, California).
↑Inside of Opal
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↑Opal
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↑Tsunami
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- Diode-pumped
high-power green laser "Millennia," output= 10 Watts, wavelength=
530 nm, Spectra Physics, California.
- *) 10-Watt Millennia's working hours: 60 (Jan 2006), 900
(Jan 2007), 1,600 (Jan 2008), 2,000 (Jan 2009), 2,400 (Jan.
2010).
- High-speed electrical digital-data-pattern generator, up to
12.5 GHz, from Anritsu, Japan.
- High-precision microwave signal synthesizer (on loan), up to
20 GHz, from Hewlett-Packerd, California, USA.
- Characterization equipments
- Auto-correlator and cross-correlator, resolution of less than
100 fs, from Femtochrome, Inc., California.
- Sampling scope, 20 GHz, from Techtronix.
- Optical spectrum analyzer, #1, 10-pm (1.25-GHz) resolution,
from Advantest, Japan.
- Optical spectrum analyzer, #2, 100-pm (12.5-GHz) resolution,
from Ando, Japan.
- Handmade optical heterodyne spectrum analyzer, #1.
- Optical pump-and-probe response characterization setup using
the Spectra Physics OPO system (2006-).
- Electrical spectrum analyzer, #1 (on loan), up to 23 GHz,
from Anritsu.
- Electrical spectrum analyzer, #2, up to 30 GHz, 1-Hz
resolution, superhigh precision and stability, from Anritsu.
Resources for the Theoretical Research
- All-optical-gate simulators
- Modelings of DISC, Demux, and SMZ-3R gating mechanisms
- Pseudorandom digital data with pseudorandom analogue
noises/jitters are taking into account
- Rate-equation modelings of the XPM and XGM mechanisms in
SOA's
- Bit-error-rate assessment
- DISC-loop pulse generation, and its locking to pseudorandom
digital data pulses
- Our original gate simulator subroutines have been re-designed
and structured, since SY2006!!.
- More conventional design tools
- Fast Fourier Transformation (FFT), wavelength filters, and
other Fourier synthesis
- Split-step beam propagation method (BPM) for GVD and SPM in
optical fibers
- Temporal soliton propagation
- Guided mode analyses in semiconductor waveguides and optical
fiber waveguides
- Workbenches
- handy standard fortran 77/90 compiler and SSL/ Fujitsu.
- Maple/ Waterloo Maple, Inc.
- Matlab.
- DOS/V computers with Microsoft windows OS.
University of Electro-Communications
Ultrafast Optical Logic Laboratory English/
Japanese
Yoshiyasu Ueno
