A comparison between black-, grey
Here, we compare the capabili-ties of white-, grey- and black-box models on the challenging test case of optimizing a bidirectional distributed Raman amplifier to achieve a target frequency-distance signal
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Here, we compare the capabili-ties of white-, grey- and black-box models on the challenging test case of optimizing a bidirectional distributed Raman amplifier to achieve a target frequency-distance signal
We have demonstrated a 102-nm-wide, high-gain, low-noise lumped Raman amplifier enabled by employing 2x1 km lengths of HNLF in a dual-stage structure and manipulating the wavelength
The unavoidable contributors of noise, amplified spontaneous emission and spontaneous Raman scattering, are included in the analysis of both phase-insensitive and phase-sensitive amplifiers.
We investigate in detail the quantum noise performance of the Raman amplifier through this mechanism under various feedback conditions. In particular, when the transmission is
For a short-reach metro network or DCI application with high-data-rate transceivers, the distributed Raman amplifier delivered the best transmission performance, compared with any other amplification
We present a compact dual-stage lumped Raman amplifier based on 2x1 km lengths of highly nonlinear fibre (HNLF). The amplifier provides 28.5-dB net gain with 4.5-dB optical noise figure
In this work, we experimentally investigate silicon Raman amplifiers optimized for fabrication with open-access foundry sub-micron silicon platform.
Characteristics of the Raman-effect based modulator for high power Yb-doped fiber lasers have been analyzed by numerical simulation. Insertion loss, backreflection, and contrast ratio are
Machine learning effective in learning complex mappings (inverse and direct) Raman amplifiers Optical response photonic devices Extensive numerical and experimental validations shows highly accurate
Optical amplification in silicon photonic integrated circuits remains a challenge and stimulated Raman scattering has been proposed as a means of achieving optical gain in silicon. In this work, we
Thus, to improve spectral throughput and simplify system design, some researchers have explored the use of low resolution Raman systems for
Raman spectroscopy is a powerful analytical technique used to identify molecular composition, structure, and interactions. However, one common issue that practitioners face is
On the other hand, if the internal degree of the amplifier can be accessed and manipulated, we can manage and even reduce the quantum noise of the amplifier''s output. In this
In this work, we experimentally demonstrate a third-order hybrid Raman amplifier (HRA) that consists of a third-order distributed Raman amplifier (DRA) cascaded with a lumped Raman
Raman Base is a powerful instrument, built with open and transparent science in mind. If you would like to know everything about it, starting with the philosophy
As described above, the system resolution is intentionally low to realize the signal-to-noise gains of low resolution Raman spectroscopy analyzed theoretically in our previous work .
In this paper, we demonstrate four different second-order Raman amplifier schemes which include first-order and second-order Raman pump. The amplifier performances are measured and
We experimentally investigated and demonstrated an ultralow noise hybrid amplifier that combines second-order distributed Raman amplifier (DRA)
We demonstrate an 80 nm bandwidth (extending from 1529 to 1609 nm), dual-stage, diode-pumped, lumped Raman amplifier using a relatively short total length (2 km) of highly nonlinear fiber. The
Any amplifier requires coupling to its internal degrees of freedom for energy gain. This coupling introduces extra quantum noise to the output. On the other hand, if the internal degree of
In this Letter, we present an experiment to reduce the quantum noise of a Raman amplifier by preparing the atomic medium in a correlated state with the Stokes light field. We report
Abstract: We present a broadband (>70nm), dual stage, discrete Raman amplifier designed with small and standard core fibres to maximize gain and minimize nonlinearity. The amplifier provides ~19.5dB
Abstract—The problem of Raman amplifier optimization is studied. A differentiable interpolation function is obtained for the Raman gain coefficient using machine learning (ML), which allows for the gradient
Ultrafast Raman loss spectroscopy: a approach to vibrational structure determination A. Lakshmanna, B. Mallick and S. Umapathy* Department of Inorganic and Physical Chemistry, Indian Institute of
Introduction Lumped Raman amplifiers (LRAs) capable of broadband operation at low-loss telecom wavelengths show great potential for multiband transmission by fully exploiting the transmission
A low noise figure and high and flat gain are advantages of second-order Raman amplifiers over first-order amplifiers. There are various ways to implement second-order Raman
For these reasons, most Raman amplifiers use a counterpropagating pump geometry. Another source of noise is due to the back-reflections of the pump signal caused by Rayleigh scattering in the fiber.
Transmission with few-mode fiber (FMF) is one of the most promising methods for increasing single fiber capacity, with urgent demands for low-noise and wideband amplification. In