IEEE Photonics Technology Letters

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Clock recovery circuit for optical packets
IEEE Photonics Technology Letters - Tập 14 Số 9 - Trang 1363-1365 - 2002
C. Bintjas, K. Yiannopoulos, N. Pleros, G. Theophilopoulos, M. Kalyvas, H. Avramopoulos, G. Guekos
We demonstrate an all-optical clock recovery circuit for operation with short data packets of 10-Gb/s rate. The circuit uses a Fabry-Perot etalon and a nonlinear UNI gate and is capable of acquiring the clock signal within a few bits.
#Clocks #Circuits #Optical filters #Optical interferometry #Optical packet switching #Nonlinear optics #Synchronization #Optical signal processing #Optical feedback #Ultrafast optics
Rapidly switching all-optical packet routing system with optical-label swapping incorporating tunable wavelength conversion and a uniform-loss cyclic frequency AWGR
IEEE Photonics Technology Letters - Tập 14 Số 8 - Trang 1211-1213 - 2002
S.J.B. Yoo, Hyuek Jae Lee, Zhong Pan, Jing Cao, Z. Yanda, K. Okamoto, S. Kamei
This letter discusses an experimental demonstration of a rapidly switching all-optical packet routing system with optical-label switching and all-optical label-swapping capabilities. The optical routing system optically extracts the subcarrier optical-label content, compares it against the forwarding table, makes packet forwarding and label-swapping decisions, and forward the packet to the desired...... hiện toàn bộ
#Optical wavelength conversion #Optical packet switching #Wavelength routing #Frequency conversion #Optical frequency conversion #Multiprotocol label switching #Arrayed waveguide gratings #Optical waveguides #Packet switching #Fabrics
All-optical signal up-conversion for radio-on-fiber applications using cross-gain modulation in semiconductor optical amplifiers
IEEE Photonics Technology Letters - - 2002
Y.-K. Seo, C.-S. Choi, W.-Y. Choi
The authors present a novel scheme of up-converting optical intermediate frequency (IF) signals with an optical local oscillator (LO) signal using cross-gain modulation in a semiconductor optical amplifier. This scheme provides high conversion efficiency and is independent of the incident light wavelength and polarization. It can be useful for radio-on-fiber transmission system applications in whi...... hiện toàn bộ
#Optical attenuators #Optical mixing #Semiconductor optical amplifiers #Optical modulation #High speed optical techniques #Nonlinear optics #Frequency #Base stations #Stimulated emission #Millimeter wave technology
Compact integrated silica wavelength filters
IEEE Photonics Technology Letters - Tập 14 Số 9 - Trang 1303-1305 - 2002
C.N. Morgan, Siyuan Yu, R.V. Penty, I.H. White
The realization of compact low-loss wavelength filters using two-dimensional integrated optics (2DIO) in a silica-on-silica material system is reported. Two designs suitable for data-communications applications are reported: a 4 /spl times/ 4 channel 6.4-nm channel wavelength spacing device and an 8 /spl times/ 8 channel 3.2-nm channel wavelength spacing device. The devices are fabricated in one d...... hiện toàn bộ
#Silicon compounds #Wavelength division multiplexing #Optical filters #Arrayed waveguide gratings #Etching #Crosstalk #Costs #Polymers #Integrated optics #Optical materials
Long-haul DWDM/SCM transmission of 64- and 256-QAM using electroabsorption modulated laser transmitters
IEEE Photonics Technology Letters - Tập 14 Số 8 - Trang 1184-1186 - 2002
G.C. Wilson, J.-M. Delavaux, A. Srivastava, C. Hullin, C. McIntosh, C.G. Bethea, C. Wolf
We report the first eight-wavelength hybrid dense wavelength-division multiplexing/subcarrier multiplexing (DWDM/SCM) transmission over 800 km (ten spans) of standard single-mode fiber, with 1.04-Gb/s payload on each wavelength in 35 6-MHz 64-quadrature amplitude modulated (QAM) channels, without dispersion compensation. Forward error-correction coding (FEC) was used to achieve error-free performa...... hiện toàn bộ
#Wavelength division multiplexing #Optical transmitters #Quadrature amplitude modulation #Chirp modulation #Fiber lasers #Forward error correction #Optical modulation #WDM networks #Payloads #Optical fiber dispersion
650-mW single lateral mode power from tapered and flared buried ridge laser
IEEE Photonics Technology Letters - Tập 14 Số 9 - Trang 1237-1239 - 2002
R.B. Swint, A.E. Huber, T.S. Yeoh, C.Y. Woo, J.J. Coleman, B.O. Faircloth, M.S. Zediker
Very high single lateral mode output powers of 650 mW are obtained from a diode laser with a unique waveguide design. The waveguide flares in the lateral dimension to create a larger spot size on the facet and simultaneously tapers in the transverse dimension to inhibit propagation of higher order lateral modes. These GaAs buried ridge devices are fabricated by selective area epitaxy.
#Laser modes #Power lasers #Waveguide lasers #Optical waveguides #Power generation #Optical design #Optical propagation #Erbium-doped fiber lasers #Epitaxial growth #Pump lasers
Tunable sampled-grating DBR lasers using quantum-well intermixing
IEEE Photonics Technology Letters - Tập 14 Số 9 - Trang 1243-1245 - 2002
E.J. Skogen, J.S. Barton, S.P. DenBaars, L.A. Coldren
Widely tunable lasers are key components for wavelength division multiplexing fiber optic networks. They reduce cost in sparing, enable dynamic networking applications, and present opportunities for future monolithically integrated wavelength division multiplexing components. The sampled-grating distributed Bragg reflector (SGDBR) laser is ideal for these purposes. The authors present a centered q...... hiện toàn bộ
#Tunable circuits and devices #Distributed Bragg reflectors #Quantum well lasers #Fiber lasers #Laser tuning #Wavelength division multiplexing #Laser modes #Optical fiber networks #Costs #Optical design
Vertically coupled InP microdisk switching devices with electroabsorptive active regions
IEEE Photonics Technology Letters - Tập 14 Số 8 - Trang 1115-1117 - 2002
K. Djordjev, Seung-June Choi, Sang-Jun Choi, P.D. Dapkus
InP vertically coupled microdisk resonator/waveguide switching devices with an electroabsorptive (EA) active region are demonstrated for the first time. The devices exhibit single-mode operation, large free spectral range of 10.5 nm and a high quality factor of 5700. The EA effect provides a way of loss-trimming the resonant characteristics. Active switches, routers, and fast modulators based on t...... hiện toàn bộ
#Indium phosphide #Optical resonators #Optical modulation #Optical filters #Resonance #Optical waveguides #Coupling circuits #Carrier confinement #Q factor #Optical losses
All-optical logic NOR gate using two-cascaded semiconductor optical amplifiers
IEEE Photonics Technology Letters - - 2002
A. Hamie, A. Sharaiha, M. Guegan, B. Pucel
The authors present a novel all-optical logic NOR gate using two-cascaded semiconductor optical. amplifiers (SOAs) in a counterpropagating feedback configuration. This configuration accentuates the gain nonlinearity due to the mutual gain modulation of the two SOAs. The all-optical NOR gate feasibility has been demonstrated delivering an extinction ratio higher than 12 dB over a wide range of wave...... hiện toàn bộ
#Logic gates #Semiconductor optical amplifiers #Power generation #Optical feedback #Extinction ratio #Optical fiber communication #Optical devices #Topology #High speed optical techniques #Nonlinear optics
A Silicon-on-Insulator Photonic Wire Based Evanescent Field Sensor
IEEE Photonics Technology Letters - Tập 18 Số 23 - Trang 2520-2522 - 2006
A. Densmore, Dan‐Xia Xu, P. Waldron, Pavel Cheben, J. Lapointe, A. Delåge, Jens H. Schmid, E. Post
Tổng số: 230   
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