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    Home > Chemicals Industry > Chemical Technology > Optical fiber technology emerges endlessly, and security monitoring applications are attracting attention

    Optical fiber technology emerges endlessly, and security monitoring applications are attracting attention

    • Last Update: 2022-11-17
    • Source: Internet
    • Author: User
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    The optical fiber broadband industry is one of
    the fastest growing industries with the largest development space in the current information industry.
    Accelerating the construction of optical fiber broadband networks can promote the upgrading of network infrastructure, improve independent innovation capabilities, and stimulate the development of related industries, which is of great strategic significance
    for coping with the financial crisis, achieving stable growth, adjusting the structure, protecting people's livelihood, promoting stability, and even enhancing the country's long-term competitiveness.
    The development of optical fiber transmission is also of progressive significance
    to the security industry.

    New fiber optic technologies are emerging

    According to relevant media reports, researchers at the University of Southampton in the United Kingdom have made a new type of optical fiber, which can transmit data
    at 99.
    7% of the speed of light.
    The researchers used this new optical fiber to achieve a data transmission speed of 73.
    7Tbps, which is equivalent to about 10TBps, which is 1,000 times faster than today's most advanced 49Gb optical fiber, and the latency rate is also greatly reduced
    .

    The speed of light in a vacuum is 299792458 meters per second, but the propagation speed in other media is usually much
    slower.
    In conventional optical fibers made of quartz glass, the speed of light slows down by 31%.

    In fact, light travels faster in air than glass, which is why researchers at the University of Southampton used a hollow optical fiber that fills almost completely air for transmission
    .

    The researchers overcame this problem by radically improving the hollow design, using a photonic bandgap edge
    .
    This new design enables low loss (3.
    5dB/km), wide bandwidth (160nm), and a much better delay rate than conventional optical fibers, resulting in a 31%
    increase in light and data transmission speed.

    Fiber optic monitoring applications are in the spotlight

    Since entering the 21st century, with the development of digital signal processing (DSP) technology and optical fiber sensing technology, a new security technology: optical fiber monitoring technology, has received global attention and has been rapidly promoted and applied
    in Europe and the United States.
    This technology is different from the existing monitoring technology based on traditional electromagnetic effects and characterized by dot layout, which uses optical fiber as an external layout device integrating intrusive signal sensing monitoring and signal transmission, and creates a comprehensive sensor network through optical fiber to realize multi-area, multi-form (linear, surface, spatial area) vibration detection and voice pickup
    .
    Outstanding features of this type of monitoring technology include:

    It is concealed and easy to deploy
    .
    The optical fiber itself is a linear flexible medium, which can be concealed and non-destructive to the building in a variety of environments and areas, and the layout method is flexible and free, which can fully supplement the perimeter alarm, channel alarm and space alarm of the Wenbo security system
    .
    Its concealment also greatly reduces the vigilance of intruders to security equipment
    .

    Has outstanding vandal
    resistance.
    It is precisely because the optical fiber adopts the method of concealed layout, and the technical principle is also confidential, unlike traditional technologies such as cameras and infrared blocking lines, which are well known, easy to identify, avoid and destroy; At the same time, the optical fiber probe has no electromagnetic radiation, more resistant to electromagnetic interference, and it is difficult to find the optical fiber probe based on the ordinary detection device for detection of electromagnetic and metal effects, therefore, the possibility of optical fiber monitoring technology being evaded and damaged is extremely low, and the anti-destructive is extremely strong
    .

    Optical fiber has the advantages of long transmission distance without relay, little dependence on energy, and no power supply is required for the sensor network deployed in the entire monitoring area, so it greatly reduces the risk that
    electronic equipment may pose a safety hazard to wooden or other material structures.
    Moreover, the system that does not need power supply on site does not have to worry about the paralysis
    of the security system caused by the power cut.

    The optical fiber broadband industry is one of
    the fastest growing industries with the largest development space in the current information industry.
    Accelerating the construction of optical fiber broadband networks can promote the upgrading of network infrastructure, improve independent innovation capabilities, and stimulate the development of related industries, which is of great strategic significance
    for coping with the financial crisis, achieving stable growth, adjusting the structure, protecting people's livelihood, promoting stability, and even enhancing the country's long-term competitiveness 。 The optical fiber transmission is different from the general linear or physical blocking detection system easy to avoid the gap, the optical fiber sensor network through the three-dimensional collaborative perception function, like a huge neural network, from the ground, underground and space for voice pickup, can accurately perceive the entire layout area of the change and sound, a full range of environmental change intrusion detection, through intelligent behavior analysis and pattern recognition, accurate analysis and judgment, the environmental impact that may produce false alarms are eliminated.
    Ensure that the system makes highly accurate notifications and alarms
    .

    The optical fiber is small and transparent, the fine optical fiber is attached to the display items, or concealed under the booth, can be the most direct close protection of cultural relics, the physical and chemical characteristics of the optical cable itself, will not bring any harm to the cultural relics, play a foolproof safety monitoring purpose
    .

    The optical fiber itself can monitor the environmental temperature in real time in a long-distance distributed continuously, and the optical fiber as a safety monitoring can also act as a temperature alarm monitoring
    .
    When the temperature around the cultural relics exceeds the storage conditions, the system can carry out alarm treatment
    .

    The optical fiber itself is a non-metallic passive device, not afraid of lightning and lightning, in the natural environment, will not corrode, not afraid of rain and snow, and can even be used in wet and water environments
    .
    At the same time, the optical fiber sensor has no energy dissipation, will not become a heat source, is suitable for flammable and explosive places, and meets high-level fire protection requirements
    .
    It is very suitable for important places
    with high security protection level and special safety requirements such as Wenbo.

    Optical fiber voice monitoring is not subject to various electromagnetic interference, will not produce the current and electrical signal noise common to electronic eavesdropping equipment, and can synchronously restore the sound of the monitoring scene with high fidelity and no delay
    .

    Optical fiber monitoring technology does not conflict with existing video, infrared and other systems, can be compatible and used, and truly touch, hear, see
    .

    At present, there is also a series of optical fiber monitoring technology
    in China.
    Around 2000, Fudan University and other scientific research institutions began to develop optical fiber dynamic monitoring technology, and in 2005, optical fiber detection and alarm products were put into trial
    .
    Based on optical fiber dynamic sensing technology, a series of products such as optical fiber intrusion vibration detection, optical fiber voice monitoring, optical fiber line security monitoring and optical fiber pipeline safety monitoring have been put on the market, which have outstanding characteristics
    .

    This type of system requires the integration of optoelectronics, materials, physics, electronics, communications, computers and other disciplines, and generally requires scientific research institutions with deep technical backgrounds to host research and development
    .
    At present, this technology is completely independently developed by China and the technical route is internationally original, which has filled the domestic gap and fully caught up with similar foreign technologies
    .
    A number of technical achievements have reached the international leading level
    in theory and technology.
    Various ministries and commissions of the state, science and technology departments of some provinces and cities, including some industry competent institutions have begun to advocate the further deepening and application
    of this technology.
    This technology has been successfully put into use
    during the Olympic Games and the World Expo.

    The optical fiber broadband industry is one of
    the fastest growing industries with the largest development space in the current information industry.
    Accelerating the construction of optical fiber broadband networks can promote the upgrading of network infrastructure, improve independent innovation capabilities, and stimulate the development of related industries, which is of great strategic significance
    for coping with the financial crisis, achieving stable growth, adjusting the structure, protecting people's livelihood, promoting stability, and even enhancing the country's long-term competitiveness.
    The development of optical fiber transmission is also of progressive significance
    to the security industry.

    New fiber optic technologies are emerging

    New fiber optic technologies are emerging

    According to relevant media reports, researchers at the University of Southampton in the United Kingdom have made a new type of optical fiber, which can transmit data
    at 99.
    7% of the speed of light.
    The researchers used this new optical fiber to achieve a data transmission speed of 73.
    7Tbps, which is equivalent to about 10TBps, which is 1,000 times faster than today's most advanced 49Gb optical fiber, and the latency rate is also greatly reduced
    .

    The speed of light in a vacuum is 299792458 meters per second, but the propagation speed in other media is usually much
    slower.
    In conventional optical fibers made of quartz glass, the speed of light slows down by 31%.

    In fact, light travels faster in air than glass, which is why researchers at the University of Southampton used a hollow optical fiber that fills almost completely air for transmission
    .

    The researchers overcame this problem by radically improving the hollow design, using a photonic bandgap edge
    .
    This new design enables low loss (3.
    5dB/km), wide bandwidth (160nm), and a much better delay rate than conventional optical fibers, resulting in a 31%
    increase in light and data transmission speed.

    Fiber optic monitoring applications are in the spotlight

    Fiber optic monitoring applications are in the spotlight

    Since entering the 21st century, with the development of digital signal processing (DSP) technology and optical fiber sensing technology, a new security technology: optical fiber monitoring technology, has received global attention and has been rapidly promoted and applied
    in Europe and the United States.
    This technology is different from the existing monitoring technology based on traditional electromagnetic effects and characterized by dot layout, which uses optical fiber as an external layout device integrating intrusive signal sensing monitoring and signal transmission, and creates a comprehensive sensor network through optical fiber to realize multi-area, multi-form (linear, surface, spatial area) vibration detection and voice pickup
    .
    Outstanding features of this type of monitoring technology include:

    It is concealed and easy to deploy
    .
    The optical fiber itself is a linear flexible medium, which can be concealed and non-destructive to the building in a variety of environments and areas, and the layout method is flexible and free, which can fully supplement the perimeter alarm, channel alarm and space alarm of the Wenbo security system
    .
    Its concealment also greatly reduces the vigilance of intruders to security equipment
    .

    Has outstanding vandal
    resistance.
    It is precisely because the optical fiber adopts the method of concealed layout, and the technical principle is also confidential, unlike traditional technologies such as cameras and infrared blocking lines, which are well known, easy to identify, avoid and destroy; At the same time, the optical fiber probe has no electromagnetic radiation, more resistant to electromagnetic interference, and it is difficult to find the optical fiber probe based on the ordinary detection device for detection of electromagnetic and metal effects, therefore, the possibility of optical fiber monitoring technology being evaded and damaged is extremely low, and the anti-destructive is extremely strong
    .

    Optical fiber has the advantages of long transmission distance without relay, little dependence on energy, and no power supply is required for the sensor network deployed in the entire monitoring area, so it greatly reduces the risk that
    electronic equipment may pose a safety hazard to wooden or other material structures.
    Moreover, the system that does not need power supply on site does not have to worry about the paralysis
    of the security system caused by the power cut.

    The optical fiber broadband industry is one of
    the fastest growing industries with the largest development space in the current information industry.
    Accelerating the construction of optical fiber broadband networks can promote the upgrading of network infrastructure, improve independent innovation capabilities, and stimulate the development of related industries, which is of great strategic significance
    for coping with the financial crisis, achieving stable growth, adjusting the structure, protecting people's livelihood, promoting stability, and even enhancing the country's long-term competitiveness 。 The optical fiber transmission is different from the general linear or physical blocking detection system easy to avoid the gap, the optical fiber sensor network through the three-dimensional collaborative perception function, like a huge neural network, from the ground, underground and space for voice pickup, can accurately perceive the entire layout area of the change and sound, a full range of environmental change intrusion detection, through intelligent behavior analysis and pattern recognition, accurate analysis and judgment, the environmental impact that may produce false alarms are eliminated.
    Ensure that the system makes highly accurate notifications and alarms
    .

    The optical fiber is small and transparent, the fine optical fiber is attached to the display items, or concealed under the booth, can be the most direct close protection of cultural relics, the physical and chemical characteristics of the optical cable itself, will not bring any harm to the cultural relics, play a foolproof safety monitoring purpose
    .

    The optical fiber itself can monitor the environmental temperature in real time in a long-distance distributed continuously, and the optical fiber as a safety monitoring can also act as a temperature alarm monitoring
    .
    When the temperature around the cultural relics exceeds the storage conditions, the system can carry out alarm treatment
    .

    The optical fiber itself is a non-metallic passive device, not afraid of lightning and lightning, in the natural environment, will not corrode, not afraid of rain and snow, and can even be used in wet and water environments
    .
    At the same time, the optical fiber sensor has no energy dissipation, will not become a heat source, is suitable for flammable and explosive places, and meets high-level fire protection requirements
    .
    It is very suitable for important places
    with high security protection level and special safety requirements such as Wenbo.

    Optical fiber voice monitoring is not subject to various electromagnetic interference, will not produce the current and electrical signal noise common to electronic eavesdropping equipment, and can synchronously restore the sound of the monitoring scene with high fidelity and no delay
    .

    Optical fiber monitoring technology does not conflict with existing video, infrared and other systems, can be compatible and used, and truly touch, hear, see
    .

    At present, there is also a series of optical fiber monitoring technology
    in China.
    Around 2000, Fudan University and other scientific research institutions began to develop optical fiber dynamic monitoring technology, and in 2005, optical fiber detection and alarm products were put into trial
    .
    Based on optical fiber dynamic sensing technology, a series of products such as optical fiber intrusion vibration detection, optical fiber voice monitoring, optical fiber line security monitoring and optical fiber pipeline safety monitoring have been put on the market, which have outstanding characteristics
    .

    This type of system requires the integration of optoelectronics, materials, physics, electronics, communications, computers and other disciplines, and generally requires scientific research institutions with deep technical backgrounds to host research and development
    .
    At present, this technology is completely independently developed by China and the technical route is internationally original, which has filled the domestic gap and fully caught up with similar foreign technologies
    .
    A number of technical achievements have reached the international leading level
    in theory and technology.
    Various ministries and commissions of the state, science and technology departments of some provinces and cities, including some industry competent institutions have begun to advocate the further deepening and application
    of this technology.
    This technology has been successfully put into use
    during the Olympic Games and the World Expo.

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