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ROADM and WSS are key network elements in intelligent network. PLC plays an essential role in providing either integrated or hybrid solutions. We examine the trade-offs and challenges between monolithically integrated and hybrid systems.
Basic properties of nano-structure semiconductor gain media such as an inhomogeneously broadened gain, a fast response time, a low alpha-parameter and complex carrier dynamics yield amplifiers which are far superior to conventional quantum well amplifiers.
we introduce the world's first multi-channel, high-speed optical receiver using Ge waveguide photodetectors monolithically integrated in the CMOS process. The integrated receivers achieves a sensitivity of -14.2dBm (10-12 BER) at 10Gbps and 1550nm.
We demonstrate the first gigabit/s modulated wireless data transmission using uncooled directly modulated lasers for low cost solution with remote millimetre-wave 40 GHz LO. Error free transmission (BER <10-9) is achieved for downlink and uplink.
We propose and demonstrate a self-starting, fundamentally mode-locked fiber laser stabilized by a single-wall carbon nanotube saturable absorber, capable of generating 200-fs, 1-nJ pulses at a low repetition rate of 1.7 MHz.
We dramatically improve the preparation process and operation efficiency of carbon nanotube mode-lockers employing a transferable vertically aligned single-walled carbon nanotube film. All-fiber laser mode-locking is achieved utilizing the film attached to a D-shaped fiber.
A semi-leaky isolator was fabricated by bonding LiNbO3 onto a magneto-optic garnet waveguide. A 1.6mm-long device provides an isolation of 20.2dB at a wavelength of 1.55mum.
In a waveguide using carbon nanotube-polyimide core we discovered polarized absorption probably due to the molecular alignment of nanotubes in the polyimide matrix. We observed efficient saturable absorption at the polarization along the molecular alignment.
We present the first demonstration of an agile WDM-PON architecture compatible with radio-over-fiber system to provide 2.5Gbit/s symmetric data services. Several enabling techniques are employed to increase transmission capacity while keeping low cost.
We propose a reliability analysis for connections with 1 + N protection and primary-backup k-link sharing. We develop a cost-effective dynamic provisioning scheme to carry connections which have stringent SLA requirements with availability guarantee and resource efficiency.
The paper explores survivability concepts for the migration to carrier class next generation IP services over optical transport networks. Design criteria for highly available optical networks are proposed and tradeoffs of different approaches are analyzed.
Polarization independent all-optical retiming is demonstrated experimentally at 10 Gb/s using a self-pulsating DFB laser and cross-phase modulation in a highly nonlinear fiber. Regardless of its state-of-polarization, the timing jitter of retimed data signal is less than 2 ps. copy2006 Optical Society of America
We clarify that GAWBS gain for a particular acoustic torsional/radial mode is observed in hole-assisted fiber. It is revealed that the acoustic mode can be controlled by simply designing the air-hole position and size.
Power characteristics and phase functions of a NALM are investigated in simulations and experimentally, showing a phase-preserving nonlinear characteristics suitable for amplitude regeneration of phase-encoded signals. A negative power penalty of -1.5 dB was obtained.
This paper reports the experimental drawing fabrication of very large negative chromatic dispersion dual-core photonic crystal fiber. The fabricated fiber has a peak chromatic dispersion value of -820 ps/(nm km).
Measurement of microstructured fiber (MSF) bending strength is reported for the first time. Both coated and chemically stripped MSF are found to exhibit fracture bending strengths comparable to standard communications fiber.
Plasmons on the surface of large metallized holes containing analyte are excited by the fundamental mode of a microstructured fiber. Phase matching between plasmon and core modes is facilitated by the perforation of fiber core.
All-optical signal reshaping is demonstrated with a 40 Gb/s RZ signal by using two cascaded pump modulated four-wave-mixing processes. A 5 dB improvement in the receiver sensitivity is reported for a degraded signal input.
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