Semiconductor optical amplifiers
Characterisation of semiconductor optical amplifiers for all-optical regeneration
... different semiconductor optical amplifiers (SOA) which are designed and fabricated for All-Optical ...and optical filtering in order to achieve regeneration functions at bit rates of 40 ...
6
Ultrafast gain and refractive index dynamics in GaInNAsSb semiconductor optical amplifiers
... Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada 共Received 25 June 2009; accepted 20 September 2009; published online 22 October 2009兲 The gain and refractive ...
6
Semiconductor optical amplifiers for ultra-wideband optical systems
... wide optical spectrum is coupled to the channel under test which is made of a tuneable laser source (TLS) modulated with a dual polarization I/Q modulator (DP I/Q) driven by a dedicated DAC fed with a ...
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Coherent beam combining of high-brightness tapered semiconductor optical amplifiers
... external optical feedback on a DFB laser It is well known that optical feedback for an external reflector may perturb the lasing process in a DFB laser and may cause a wide variety of different effects that ...
193
Wavelength converters based on four-wave mixing in semiconductor optical amplifiers for advanced modulation formats
... the optical front end: signal deskew synchronizes the I and Q components in time with respect to one another by compensating for the path length mismatches of the 90 optical hybrid while the ...
147
Single WDM channel efficient wavelength shifting and/or amplification using couterpropagating optical parametric amplifiers
... and amplifiers. Co-propagating optical parametric amplifiers (OPA) based on quadratic nonlinear materials have been shown to be an interesting alternative to state-of-the-art semiconductor ...
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Effects of dynamics and optical feedback on hybrid III-V/Si semiconductor lasers
... modulators, amplifiers and photo-detectors) with very high densities enabling the development of complex circuits with a steadily increasing number of components [37, 38, 39, 40, 41, 42] for PICs ...Novel ...
193
Frequency comb dynamics of a 1.3 μm hybrid-silicon quantum dot semiconductor laser with optical injection
... dot optical frequency comb lasers (QD- ...dynamics. Optical injection is also found to be able to improve the comb spectrum in term of 3-dB bandwidth and its ...in optical interconnects and datacom ...
6
Sagnac Loop Incorporating a Semiconductor Optical Amplifier Without Bias Current to Receive/Modulate Weak RF Signals
... modulated optical power is achieved but buried in a very large optical ...an optical signal that can be further optically post-amplified using an EDFA or ...
5
Electrical Modulation of a Semiconductor Optical Amplifier Inserted into a Sagnac Loop by Injecting Microwave Carrier
... all- optical digitising of ARoF links and networks (o-DRoF), i.e. all-optical ADC (transmitter) and DAC (receiver) both intended to process RoF signals, which the authors has been working ...enables ...
6
Coupled experiment/simulation approach for the design of radiation-hardened rare-earth doped optical fibers and amplifiers
... radiation-hardened optical fiber, based on an active fiber with core codoped with Phosphorus, Cerium, Ytterbium and Erbium, allows a strong decrease of the radiation effects on the fiber-based ...
10
Design of micropower operational amplifiers
... -- G- IMP Quiescent Current in PMOS Transistor MY of Ou4M Pair Quiescent Current in NMOS Transistor M2N of Output Pair -VL- IDW17 Quiescent Tail Current of Differential Input Pair in [r] ...
151
All-optical ultrafast switching of semiconductor micropillar cavities : basics and applications to quantum optics
... The semiconductor resonator, often made of AlAs, is reduced in size by selective oxidation in order to locally increase the confinement of the light and to localise current ...
175
Coherent multi-exciton dynamics in semiconductor nanostructures via two-dimensional Fourier transform optical spectroscopy
... those found in rephasing spectra, such as diagonal and off-diagonal peaks (where the diagonal is now defined as ω 1 = ω − ω 0 ) and complex 2D spectral lineshapes that indicate many-body contributions convolved with ...
149
Time Domain Traveling Wave Model of Distributed Feedback semiconductor laser with weak optical feedback
... 2 Optical spectrum of a: (A) solitary (DFB) laser, (B) with in phase feedback -80 dB, (C) with out of phase feedback -70 dB The ...weak optical feedback of -80 dB and external cavity length ...
5
Thermally insensitive determination of the linewidth broadening factor in nanostructured semiconductor lasers using optical injection locking
... Methods Figure 6a shows the scanning electron microscope (SEM) images of the InAs Qdashes (let) and Qdots (right), grown by chemical beam epitaxy (CBE) on InP substrates 43 . A thin layer of GaAs (GaP) underneath InAs ...
9
Coherent combination of ultrafast fiber amplifiers
... experimental degrees of freedom to adjust the amplitude of each replica, since the same subsystem is used to split and combine, and the number of replicas increases exponentially with the number of delay lines used. ...
16
Novel Dopants for Silica-Based Fiber Amplifiers
... [5] M. Yamada, M. Shimizu, Y. Ohishi, J. Temmyo, M. Wada, T. Kanamori, M. Horiguchi, S. Takahashi, "15,1-dB-gain Pr 3+ -doped fluoride fiber amplifier pumped by high power laser diode modules", IEEE Photon. ...
4
Solid state RF amplifiers for accelerator applications
... With the development of the integrated circuit technology, the Metal Oxide Semiconductor Field Effect Transistor (MOSFET) could be manufactured (1963, Bell Laboratories, Atalla and Khang). It’s worth to remind ...
6
Biasing techniques for linear power amplifiers
... Power amplifiers with conventional fixed biasing attain their best efficiency when operate at the maximum output power.. For lower output level, these amplifiers are very ineffi[r] ...
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