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This amplifier is suitable for use in communication systems.
Proceedings ArticleDOI
Gaurav Paruthi, William Thies 
07 May 2011
5 Citations
While most participants prefer to use a computer if one is available, for resource-poor environments the DVD platform could represent a viable and low-cost alternative.
DVD player with the holographic element is characteristic of compensating the main optical error met in the common CD player well.
Our results indicated this kind of tellurite glasses could be used as an ideal host glass for optical amplifier.
Journal ArticleDOI
M.J. Pettitt, A. Hadjifotiou, R.A. Baker 
29 Citations
The fibre amplifier may therefore be suitable for use in multichannel optical systems.
The results demonstrate that the technology can also be used in the HD DVD-based system.
Journal ArticleDOI
02 Dec 1997
8 Citations
We have developed a Viterbi decoding circuit which is suitable for DVD players.

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Ammonothermal GaN crystal growth CMP
4 answers
Ammonothermal GaN crystal growth involves the dissolution of GaN in supercritical ammonia and its deposition on a seed crystal within an autoclave, allowing continuous crystal production. Recent advancements include the use of resistance heaters and consideration of real thermal boundaries, optimizing power values for specific systems. Studies have shown that during the transition from dissolution to growth stages, significant temperature differences occur between crystals and the surrounding fluid, affecting crystal growth rates. Evaluation of NEAT GaN substrates and bulk crystals has demonstrated reduced dislocation densities and improved crystal quality, with oxygen reduction enabling lower residual oxygen levels and enhanced optical properties. A proposed alternative growth model suggests the presence of an amidogallate complex in the autoclave, potentially leading to a new growth process.
How are wearables disrupting finance?
5 answers
Wearables are disrupting finance by enabling safe online and offline payments, providing virtual items of value through wearable devices, and enhancing financial security features. These devices are revolutionizing the financial services industry by offering improved digital sales opportunities, enhanced communication with consumers, and expanded accessibility of services. Wearables also have the potential to streamline life insurance processes, improve trust between insurers and customers, and simplify end-of-life planning. Additionally, wearable technology can contribute to managing chronic diseases and improving overall wellness. The integration of wearables in finance not only ensures secure transactions but also enhances user experience, accessibility, and financial planning capabilities.
Why is wavelength of 1285nm important for a laser?
5 answers
The wavelength of 1285nm is significant for lasers due to its relevance in various applications. In the context of laser communication systems, different wavelengths are chosen based on propagation issues and technology maturity. Additionally, in the development of broadband wavelength-swept lasers, a scanning range from 1129nm to 1352nm was achieved, highlighting the importance of this wavelength region in biophotonics and optical fiber sensors. Moreover, a wavelength-swept laser constructed at the 850nm region demonstrated high performance with narrow linewidths and broad bandwidths, showcasing the versatility and utility of different wavelength ranges in laser systems. Therefore, the 1285nm wavelength holds importance across various fields such as communication, biophotonics, and sensor technologies.
How science communication evolve over time?
4 answers
Scientific communication has evolved over time due to various factors. In the mid-seventeenth to the late-nineteenth century, the linguistic development of scientific English was influenced by external pressures such as specialization and diversification, which led to an increase in expressivity. However, communicative concerns also played a role in pulling towards convergence on particular options, resulting in the conventionalization of scientific language. In the 16th century, science in the modern sense emerged, and scientific communication began to take shape in Europe through correspondence and the formation of an "invisible college" of leading intellectuals. Throughout history, scientists have communicated with each other through written correspondence, books, and journals, which gradually became forums for scientific discussions. The field of communication in science is interdisciplinary and can benefit from an evolutionary perspective, linking human communication behavior with evolutionary psychology and understanding the crisis of community in the modern world. Technological advancements have also played a role in the evolution of scientific communication, from oral traditions to written records on clay tablets, papyrus scrolls, and eventually printed books.
What is the difference between dual and single channel amplifier?
4 answers
A single-channel amplifier is designed to amplify signals from a single input source, while a dual-channel amplifier is capable of amplifying signals from two separate input sources. In the case of a single-band filtering power amplifier (FPA), it utilizes a bandpass filter (BPF) as the output matching network (OMN) to control the impedances at the fundamental mode and harmonic independently. On the other hand, a dual-channel lock-in amplifier (LIA)achieves high consistency by symmetric design of the analog path and digital algorithm structure. Another example is a single-channel audio power amplifier, which includes various modules such as charge pump circuit, power amplifier power tube, and ALC control circuit. In contrast, a common quantum well (QW) semiconductor optical amplifier (SOA)demonstrates the ability of amplitude regeneration for return-to-zero (RZ) differential phase shift keying (DPSK) signals in both single-channel and dual-channel scenarios.
How to hide all apps in mac?
5 answers
To hide all apps on a Mac, you can use various methods. One method involves using a hiding system that enters an editing mode for application hiding and associates an unlocking gesture with the application to be hidden. Another method involves dividing the application code into a secret code and a normal code, generating a secret code caller and a dummy code, encrypting the secret code, and disposing of the dummy code and encrypted secret code. Additionally, a method involves identifying a user's current operation track of a target source application icon, matching it with a preset hiding operation track, and switching the target source application icon into a hidden application icon. These methods ensure the privacy and security of the hidden applications while maintaining the functionality of the device.
What is the limit of detection of OPA assay?
4 answers
The limit of detection of the OPA assay can be improved significantly by microwave-enhanced hydrolysis and subsequent post-column OPA derivatization. Compared to native fluorescence detection, the detection limit can be lowered by a factor between 60 and 120 depending on the amino acid composition of the protein.
How does optical amplification optimize energy efficiency in fiber optic networks?
4 answers
Optical amplification optimizes energy efficiency in fiber optic networks by reducing power consumption and improving signal quality. By utilizing bidirectional pumping and controlling the optical power ratio of forward and backward pumps, the energy efficiency of cladding-pumped multicore (MC) erbium-doped fiber amplifiers (EDFAs) can be improved. This leads to a reduction in the total optical pump power required, resulting in improved energy efficiency of signal amplification and equalization in wavelength division multiplexing (WDM) and spatial division multiplexing (SDM). Additionally, the use of load adaptive sequence arrangement (LASA) and modified LASA techniques in optical networks can further enhance energy efficiency by reducing power consumption and idle time of network units. Overall, optimizing optical amplification techniques and resource scheduling methods contribute to achieving better energy efficiency in fiber optic networks.
What is the current state of research on the reflection, transmission, and absorption of monolayer graphene?
5 answers
The current state of research on the reflection, transmission, and absorption of monolayer graphene is focused on various aspects. One area of study involves the use of dielectric-graphene or semiconductor-graphene structures with controlled material parameters to achieve amplification and transform spectra. This research is of interest to developers of graphene-based controlled photonic devices. Another area of research explores the enhancement of light absorption in graphene through the excitation of accidental quasi-Bound States in the Continuum (BICs) and quasi-BICs based on metasurfaces and grating structures. The absorption responses of these structures can be modulated by changing the Fermi level of graphene. Additionally, research has shown that the near-infrared light absorption of monolayer graphene can be greatly improved through the excitation of magnetic resonance in metamaterials. The absorption bandwidth is broad and insensitive to incident angle and polarization, and the absorption can be modulated by changing the Fermi energy of graphene. The electronic properties of multibarrier graphene systems have also been investigated, showing that the conductance and transmission can be modulated by the number of barriers and the quantum size of the layers.
Why fluorine has a stronger EDS intensity than oxygen?
4 answers
Fluorine has a stronger EDS intensity than oxygen due to the co-doping of fluorine with erbium ions in silicon-based light-emitting devices. This co-doping suppresses the thermal quenching effect and Auger recombination, resulting in a significant increase in photoluminescence (PL) efficiency. As a result, fluorine-doped silicon exhibits relatively strong PL at room temperature. Additionally, the KαL1/KαL0 intensity ratio of fluorine is measured in fluorine compounds, and an anomalous reduction of this intensity ratio is observed in certain compounds, such as KF and SrF2, which is attributed to resonance electron transfer from the metal ion to the spectator vacancy in the fluorine ion. These findings suggest that the presence of fluorine enhances the emission properties and intensity of certain materials, leading to a stronger EDS intensity compared to oxygen.
How to write phd Synoposis?
5 answers
To write a PhD synopsis, it is important to follow certain steps. First, identify the research problem and provide a clear problem statement. Next, start writing the synopsis from the day of registration and include a thesis plan that outlines the structure and content of the synopsis. It is crucial to maintain regular contact with supervisors and seek their expectations and feedback throughout the writing process. Additionally, expanding networking and continuously writing, revising, and publishing are important aspects of writing a PhD synopsis. Finally, ensure that the synopsis addresses the problem, describes existing knowledge, presents the research methodology, and discusses the results and their implications. By following these steps, one can effectively write a PhD synopsis.