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all-optical NOR gate at 10Gb/s based on SOA fiber ring laser by C. Zhao,
X. Zhang, H. Liu, D. Liu, D. Huang Optics Express, v.13, no.8,
p.2793, April 18 (2005). Abstract:
A novel scheme for a tunable all-optical logic NOR gate is presented that
is based on a semiconductor fiber ring laser. In this new configuration a semiconductor
optical amplifier is employed not only as the operational medium for cross-gain
modulation effect to form a logic gate, but also as the active medium for a fiber
ring laser that is designed to replace the continuous-wave light required in many
other schemes. Alloptical logic NOR operation is successfully demonstrated experimentally
by use of 10 Gb/s nonreturn-to-zero (NRZ) signals. An output extinction ratio
higher than 10.3 dB can be obtained over the 40 nm tuning range except for a 4
nm gap around the input wavelength. to read
full article, go to Optics
Express © 2005 Optical
Society of America. 
Harmonically
mode-locked glass waveguide laser with 21-fs timing jitter by J.E. Malowicki,
M.L. Fanto, M.J. Hayduk, and P.J. Delfyett, Jr.; IEEE Photonics
Technology Letters, v.17, no.1, p.40 (2005).
Abstract:
We report on experimental jitter results of a 10-GHz mode-locked laser. The
laser is an actively harmonically modelocked fiber laser using an erbium-doped
glass waveguide as the gain medium. Amplitude noise and corresponding phase noise
effects are greatly reduced by the inclusion of an intracavity high-finesse fiber
Fabry-Pérot etalon. Typical results show timing jitter of 21-fs root mean square,
integrated from 10 Hz to 100 MHz. to read full article,
go to
http://ieeexplore.ieee.org ©
2005 IEEE. Reprinted, with permission, from IEEE Photonics Technology Letters,
v.17, no.1, p.40 (2005)
Rapid amplitude and group-delay measurement
system based on intra-cavity-modulated swept-lasers by S. Y. Set, K. Hsu,
P. J. Santangelo, C. S. Goh, and K. Kikuchi; Special Joint Issue
of the J. Lightwave Technol. and the IEEE Transactions on Instrumentation and
Measurement, v.53 p.192 (2004).
Abstract:
In this paper, we present a high-speed wavelength-swept laser for application
in a real-time optical device characterization system. The system is capable of
simultaneous measurement of both the spectral amplitude and group-delay responses
of the device-under-test, at a scan rate of 22 Hz over a wide wavelength range
of 50 nm. This corresponds to a record sweep rate of >1000 nm/s. to
read full article, go to
http://ieeexplore.ieee.org ©
2004 IEEE. Reprinted, with permission, from IEEE Transactions on Instrumentation
and Measurement, v.53 p.192 (2004)
Broadband wavelength tunable, single frequency,
and single polarization Bismuth Oxide-based Erbium-doped fiber laser by H.
Sotobayashi, J. T. Gopinath, Y. Takushima, K. Hsu, and E. P. Ippen; IEEE
Photonics Technol. Lett., v.16, no.7, p.1628 (2004).
Abstract:
We demonstrate a broad-band wavelength-tunable Bismuth Oxide-based Erbium-doped
fiber (Bi-EDF) laser covering both the conventional wavelength band and the long
wavelength band. It features single frequency and single polarization oscillation;
the former is obtained by making the cavity length short and incorporating an
intracavity narrow-band fiber Fabry-Pérot filter, and the latter is achieved
with a sigma laser configuration using nonpolarization maintaining fibers. Tuning
over 90 nm (1520-1610 nm) is achieved by utilizing the broad gain bandwidth of
Bi-EDF amplifier. to read full article, go to http://ieeexplore.ieee.org
© 2004 IEEE. Reprinted, with
permission, from IEEE Transactions on Instrumentation and Measurement, v.53 p.192
(2004)
A
2cm-long mode-locked fiber Fabry-Perot laser (FFPL) incorporating carbon nanotubes
by S. Yamashita, Y. Inoue, K. Hsu, S.Y. Set, M. Jablonski, H. Yaguchi, T. Kotake,
and K. Sato; Conference on Lasers and Electro-Optics (CLEO-04)
(2004). Abstract: We demonstrate passive
mode-locking of short-cavity (~2cm) fiber Fabry-Perot laser by incorporating carbon
nanotubes as a saturable absorber. Stable pulses are generated with pulsewidth
as short as 0.68ps and repetition rate as high as 5.18GHz. read
article... Copyright
2004. Used with permission of the authors.
10GHz
short-cavity fiber pulsed lasers passively mode-locked using carbon nanotubes
by S.Y. Set, S. Yamashita, K. Hsu, K.H. Fong, Y. Inoue, K. Sata, D. Tanaka, and
M. Jablonski; Ninth Optoelectronics and Communications Conference/Third
International Conference on Optical Internet (OECC/COIN2004).
read
article... Copyright
2004. Used with permission of the authors
Active
mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity
by S. Yamashita and K. Hsu; Electronics Lett., 37, p.1115 (2001).
read
article... Copyright 2001. Used
with permission of the authors
Single-polarization
generation in fiber Fabry-Perot laser by self-injection locking in short feedback
cavity by K. Hsu, S. Yamashita; J. Lightwave Technol., LT-19,
p.520, (2001).
Abstract: Single-frequency
and single-polarization lasing can be generated in a compact self-injection locked
fiber Fabry-Perot laser with a short fiber Bragg grating feedback cavity. No discrete
polarization control components are required. Different wavelengths across the
laser gain bandwidth can be generated by an appropriate combination of cavity
designs and feedback fiber Bragg gratings. A 10-Gb/s nonreturn-to-zero transmission
test demonstrates the laser's applicability for optical fiber communications. to
read full article, go to http://ieeexplore.ieee.org ©
2001 IEEE. Reprinted, with permission, from J. Lightwave Technol., LT-19, p.520,
(2001)
Tunable
erbium-doped fiber ring laser precisely locked to the 50GHz ITU frequency grid
by T. Haber, K. Hsu, C. M. Miller, and Y. Bao; IEEE Photonics
Technol. Lett., 12, p.1456 (2000).
Abstract:
A discretely tunable, single-frequency erbium-doped fiber ring laser demonstrates
frequency locking to the 50-GHz ITU frequency grid with an accuracy of 0.3 GHz
and stability of 0.05 GHz over a 50-nm tuning range. An output power of 7 mW and
an extinction ratio of 45 dB make this single-frequency laser useful for a variety
of DWDM applications. to read full article, go to http://ieeexplore.ieee.org ©
2000 IEEE. Reprinted, with permission, from IEEE Photonics Technol.
Lett., 12, p.1456 (2000)
High-performance
single-frequency fiber Fabry-Perot laser (FFPL) with self-injection locking
by S. Yamashita, K. Hsu, and T. Murakami; Electronics Lett., 35,
p.1952 (1999).
Single-frequency,
single-polarization operation of tunable miniature erbium:ytterbium fiber Fabry-Perot
lasers by use of self-injection locking by S. Yamashita and K. Hsu; Optics
Lett. 23, p.1200 (1998). Abstract: We demonstrate
successful single-frequency, single-polarization operation of erbium:ytterbium
fiber Fabry-Perot lasers with frequency- and polarization-selective optical feedback,
using a fiber Bragg grating and a polarizer. Side-mode suppression greater than
60 dB and pure single-polarization operation were achieved. to
purchase full article, go to Optics
Letters © 1998 Optical Society of
America.
Continuously
tunable photopumped 1.3mm fiber Fabry-Perot surface-emitting lasers by K.
Hsu, C. M. Miller, D. Babic, D. Houng, and A. Taylor; IEEE Photonics
Technol. Lett., 10, p.1199 (1998). ©
1998 IEEE.
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