The three principal applications of broadband light sources are as follows. Let’s take a quick look at each one to get a better understanding of them.
According to the order of Russian Prime Minister Mikhail Mishustin, the Russian government will allocate 140 billion rubles over 10 years for the construction of the world's first new synchrotron laser accelerator SILA. The project requires the construction of three synchrotron radiation centers in Russia.
A femtosecond laser is an "ultrashort pulse light" generating device that emits light only for an ultrashort time of about one-gigasecond. Fei is the abbreviation of Femto, the prefix of the International System of Units, and 1 femtosecond = 1×10^-15 seconds. The so-called pulsed light emits light only for an instant. The light-emitting time of the flash of a camera is about 1 microsecond, so the ultra-short pulse light of femtosecond only emits light for about one billionth of its time. As we all know, the speed of light is 300,000 kilometers per second (7 and a half circles around the earth in 1 second) at an unparalleled speed, but in 1 femtosecond, even light only advances by 0.3 microns.
The team of Professor Rao Yunjiang of the Key Laboratory of Optical Fiber Sensing and Communications of the Ministry of Education, University of Electronic Science and Technology of China, based on the main oscillation power amplification technology, realized for the first time a multimode fiber random with an output power of >100 W and a speckle contrast lower than the human eye speckle perception threshold. Lasers, with the comprehensive advantages of low noise, high spectral density and high efficiency, are expected to be used as a new generation of high-power and low-coherence light sources for speckle-free imaging in scenes such as full field of view and high loss.
For spectral synthesis technology, increasing the number of synthesized laser sub-beams is one of the important ways to increase the synthesis power. Expanding the spectral range of fiber lasers will help increase the number of spectral synthesis laser sub-beams and increase the spectral synthesis power [44-45]. At present, the commonly used spectrum synthesis range is 1050～1072 nm. Further expanding the wavelength range of narrow linewidth fiber lasers to 1030 nm is of great significance to the spectrum synthesis technology. Therefore, many research institutions have focused on short wavelength (wavelength less than 1040 nm) narrow line Wide fiber lasers were studied. This paper mainly studies the 1030 nm fiber laser, and extends the wavelength range of the spectrally synthesized laser sub-beam to 1030 nm.
Fiber optic module can be divided into fiber optical receiver module, fiber optical transmission module, fiber optical transceiver module and fiber optical transponder module.
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