Fuzzy logic based feedback control system for the frequency stabilization of external-cavity semiconductor lasers

Wang, Yang; Wu, Xiaoyan; Wang, Yuhang; Zhou, Xiaoping

doi:10.1080/15599612.2020.1828516

Cited by 7 publications

(4 citation statements)

References 21 publications

(20 reference statements)

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“…Martin et al 24 showed the laser frequency stabilization of an ECDL onto a line in the tellurium spectrum via saturation spectroscopy, and increased the duration of stable single‐frequency operation from hours to days by stabilizing the laser to a tellurium absorption line at 452.756 nm. Recently, the fuzzy logic algorithm 25 for ECLs stabilization was developed with higher performances.…”

Section: Figurementioning

confidence: 99%

Tellurium‐stabilized blue laser diode

Chen

Wang

et al. 2021

Micro & Optical Tech Letters

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A robust and compact blue optical frequency reference within blue region was designed. A 40-mW telluriumstabilized single-frequency blue diode laser in external cavity was designed with an absorption spectroscopy method based on tellurium molecular transitions. Furthermore, the uncertainty of the frequency stabilization can be pushed to 2 Â 10 À9 at a 10-s integration time. In addition, the correspondence frequency instability was 1.3 MHz when the laser wavelength was 445.75 nm. This study indicates that high-stability frequency reference within the blue region can be achieved with an external cavity diode laser as opposed to the diode-pumped frequency-doubled solid-state laser.

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Section: Figurementioning

confidence: 99%

Tellurium‐stabilized blue laser diode

Chen

Wang

et al. 2021

Micro & Optical Tech Letters

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“…The second direction is to design all-optical logic devices [1][2][3][4][5][6] on the physical principles of interference, polarization, and coherence, as well as the use of the properties of diffraction gratings and photonic crystals. The researchers demonstrated experimental results [7,8] that showed an increase in the performance of all-optical devices. The wider use of such devices is hampered by currently imperfect production technologies.…”

Section: Introductionmentioning

confidence: 97%

Logical Platforms for Mobile Application in Decision Support Systems Based on Color Information Processing

Timchenko,

Kondratenko,

Kreinovich

2024

JMM

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This work is devoted to the creation of mobile applications for a wide class of decision-making problems with large databases based on effective optical logical systems. Such systems use (a) the representation of color as a carrier of logical fuzzy information and (b) the construction of logical decisions by transforming the light emitter with appropriate color filters. Optical processing of fuzzy information is carried out using the proposed block diagram of fuzzy logic gates (logical coloroid). Input data is generated based on expert assessments. The fuzzy database is formed by defining the corresponding color as a quantum (set) of information. The article discusses (a) the main steps in the synthesis of logical inference procedures for decision-making systems and (b) a generalized block diagram of an optical logical coloroid as the basis for creating multi-level mobile decision-making systems with artificial intelligence components. The use of color as a carrier of logical information allows the creation of high-speed mobile devices with convenient visualization.

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“…Due to these practical successes, fuzzy data processing has become an important part of data processing in general. So, not surprisingly, researchers have shown interest in the use of optical computing for processing fuzzy data [16][17][18][19][20][21][22][23][24][25][26][27]. The first optical computing devices for processing fuzzy data were based on several different ideas: on the representation of logical operations using the optical effect of anisotropic scattering [16], on a programmable array of prisms [17], and on the calibration of shadow diagrams, for example, an optical system based on a zone coding scheme and a shadow casting method [18].…”

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confidence: 99%

“…Systems in which optical computing is used for processing fuzzy data have been successfully used in technical applications; see, e.g., [25,26]. However, such systems…”

mentioning

confidence: 99%

Ефективний Оптичний Підхід До Обробки Нечітких Даних На Основі Кольорів Та Світлофільстрів

Timchenko¹,

Kondratenko²,

Kreinovich³

2022

ПУИ

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This work is devoted to the creation of effective optical logic systems based on the use of light emitter of a certain color directly as a fuzzy variable — the carrier of logical information and the basis for building logical solutions by transforming light emitter with appropriate light filters. Optical processing of color information, which reflects different values of input data (considered on the example of expert evaluations), is carried out by the proposed structural construction of fuzzy logic gates (logic coloroid) and is significantly simplified, in relation to existing systems, due to the implementation on the properties of additive and subtractive color processing using fairly simple light filters. A fuzzy database was formed based on the definition of the quantum of information as the corresponding color, and the components of the optical logic system based on the additive and subtractive processing of the light emitter of the corresponding colors; the basics of the synthesis of logical inference and decision-making systems have been developed. The paper synthesizes a generalized structural diagram of an optical logic coloroid as a basis for creating a multi-level decision-making system for further application in artificial intelligence systems. Schemes of optical logic coloroids can be combined into series-parallel hierarchically organized schemes, the color of the used light filters can also, in addition to expert assessments, reflect the tactile information of sensor systems about the environment, which is necessary for the formation of appropriate logical assessments or decisions. The use of color as a carrier of logical information allows you to create fast-acting technical devices with performance based on the calculations of which the speed of light is used to form a certain array of logical solutions.

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Fuzzy logic based feedback control system for the frequency stabilization of external-cavity semiconductor lasers

Cited by 7 publications

References 21 publications

Tellurium‐stabilized blue laser diode

Tellurium‐stabilized blue laser diode

Logical Platforms for Mobile Application in Decision Support Systems Based on Color Information Processing

Ефективний Оптичний Підхід До Обробки Нечітких Даних На Основі Кольорів Та Світлофільстрів

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