Fiber optic endoscope can be introduced into heart and ventricle to measure heart blood pressure, oxygen saturation and body temperature. The laser scalpel connected with optical fiber has been applied in clinic and can be used for the treatment of photosensitive cancer. In addition, the endoscope made of optical fiber can help doctors check the diseases of stomach, esophagus and duodenum. Fiber optic gastroscope is a hose composed of thousands of glass fibers. It has the ability to transmit light and images, and it is soft, elastic and can be bent at will. It can be inserted into the stomach through the esophagus. Optical fiber transmits images in the stomach, so that doctors can see the situation in the stomach, and then make diagnosis and treatment according to the situation.

Sensor application

Optical fiber can send sunlight to every corner and can also be processed. Computer, robot, automobile switchboard, etc. Optical fibers have also been successfully used to transmit light sources or images. If it is combined with sensitive elements or uses its own characteristics, it can be made into various sensors to measure pressure, flow, temperature, displacement, luster, color and so on. It is also widely used in energy transmission and information transmission.

Optical fiber art application

Due to the good physical characteristics of optical fiber, optical fiber lighting and LED lighting are increasingly used for artistic decoration and beautification. The application is as follows: the name (standard design) and LOGO of the door are made of thick optical fiber for halo lighting. The local contour of the door head is illuminated by φ 18 (φ 14) edge fiber. Optical fiber three-dimensional mirrors are used locally in the facade of the site. The artistic distribution of optical fiber lattice is adopted, and YY-S 150 optical fiber scanner for optical fiber lighting is configured. Arrange fiber-optic ground lights on the lawn. Optical fiber waterfall, optical fiber stereo ball and other artistic shapes. At the same time, it is also used for decorative display and advertising display. Optical fiber can also be used as a display of various visual arts, and its characteristics have been fully applied, as shown in the figure: optical fiber becomes an ornament: optical fiber art.

Using the luminous characteristics of optical fiber, it can be made into fluorescent optical fibers of various colors and optical fiber vases full of stars, which are very beautiful for gift parties and interior decoration:

As shown in the figure below:

Optical fiber downhole detection technology

In the past, the oil industry could only exploit oil and gas reserves by using the existing technology, which often failed to meet the needs of rapid recovery of investment and maximum recovery of oil and gas, resulting in an average recovery rate of only about 35%. Downhole system suppliers predict that oil recovery can be increased to 50%~60% by using intelligent well technology. Before developing sensors in wells, the only way to collect downhole information is logging. Although logging method can provide valuable data, its operation cost is high and it may damage oil wells. Therefore, better downhole technology is needed to improve undisturbed flow monitoring and control. The technologies that can improve oil recovery include: electronic downhole sensors to provide fixed-point temperature and pressure monitoring; Flow and water content sensor; Underground electro-hydraulic control flow control system; Based on real-time reservoir dynamic data; Optimize reservoir simulation; High temperature optical fiber downhole sensor; Electronic and optical fiber wellhead wet connection system. In the past few years, sensor technology has been increasingly transferred from other industries to the sea and underground, especially optical fiber sensor technology, which has greatly improved the reliability of high temperature systems. Recently, large underground equipment suppliers often cooperate with or acquire professional companies of optical fiber detection technology, which fully proves the potential of this technology. This series of optical fiber sensors includes three proven core technologies and 1 technologies to be developed: distributed temperature detection (DTS). This technology relies on a certain length of optical fiber to monitor temperature changes at different locations. Its temperature resolution is 0. 1oC, and its position resolution is 1m (the fiber length is greater than 10000 m). Optical fiber point source detector, usually called Bragg grating (FBG). In this technology, a piece of processed optical fiber is put into the probe, and a small stress is applied to the optical fiber during measurement, so that the length of the optical fiber detector changes slightly, thus making a small but detectable change in the reflection frequency. One of its advantages is that it allows the same optical fiber to contain sensors with different working frequencies. The current technology limits each fiber to about 10 sensors, but does not limit the position of sensors, so the transmission range is not a problem. The general detection sensitivity can reach 0. 1oC. Optical fiber can also be used as a mechanical point source sensor for direct reading. In its simplest form, it may just be an empty hole. As the external pressure changes its length, the intensity of the optical signal incident on the cavity decreases with the length of the cavity. Optical fiber transmission equipment allows multiple sensors to be combined on one optical fiber to measure different physical variables. Chemical testing. The development and industrial application of professional optical fibers are increasing, and they are sensitive to the existence and abundance of chemical substances. This technology is not very advanced, but it has great development potential.