All series CNI Laser modules can be fiber coupled with different core diameter MM fiber or SM fiber. You have to refer to the detailed specs of each laser modules (such as power, stability, noise, size, etc) to decide which one is suitable for your application. We would like to do the coupling job for you.
The collimator of Fiber Coupling Laser is designed to connect to the end of FC/PC or SMA905 connector and contains an AR-coated spherical lens. The distance between the spherical lens and the tip of the FC-terminated fiber can be adjusted to compensate for focal length changes, or to re-collimate the beam at the specific wavelength and distance of interest.
Fiber Coupling Efficiency Chart (Connector: SMA905 or FC)
Laser Type
Fiber Coupling Efficiency
FC for SM fiber ,FC/SMA905 for MM fiber
SM Fiber
4~9 µm
MM Fiber
≥50 µm
MM Fiber
≥100 µm
MM Fiber
≥200 µm
MM Fiber
≥400 µm
DPSS Laser
TEMoo
>40%
>70%
>75%
>80%
>90%
Multi transverse mode
>20%
>60%
>70%
>80%
>90%
Diode Laser
TEMoo
>30%
>60%
>75%
>80%
>90%
Multi transverse mode
Low
>30%
>65%
>75%
>85%
Fiber Coupling Laser Fiber Coupling Laser,Fiber Coupled Laser,Infrared Fiber Laser System,Diode Laser Module Changchun New Industries Optoelectronics Technology Co., Ltd. , https://www.opticsqm.com
The rapid increase in coal production has brought about the demand for coal machinery. According to historical data, China's raw coal production growth rate is closely related to the growth rate of coal sales, with a correlation coefficient of 0.73. From 1995 to 2007, China's raw coal production increased at an annual average of 4.9%, while the output of raw coal increased from 2000 to 2007. 14.67%, accelerated in recent years. According to the historical data and our estimated domestic sales of coal-fired engines, the annual average annual growth in the sales of coal machinery from 2000 to 2007 was 39.04%.
Domestic coal machine competition is fierce, and the complete set is the core advantage. After continuous acquisitions and reorganizations, the two giant monopoly coal machinery manufacturers DBT in Germany and JOY in the United States have formed internationally. They have set up factories in China. There are a large number of domestic coal mining machine manufacturers. The overall concentration of the industry is low and the competition is fierce. The market share of leading enterprises is less than 10%, and the share of the top ten companies is less than 50%. However, single coal products have formed their own dominant enterprises. Such as the production of roadheading machine Jiamusi coal machine, coal mining machine Jixi coal machine, scraper conveyor Zhangjiakou coal machine and hydraulic support Zhengzhou coal machine. The complete set of coal machinery is the future direction of development. The current domestic supporting capacity is too heavy coal machinery, China Coal Energy, IMM and Tiandi Technology, and Sany Heavy Equipment is also aiming at complete sets.
Multi-factor coal-fired machine demand has grown rapidly. First, according to the coal industry plan, 13 large-scale coal bases will be constructed during the “Eleventh Five-Year Plan†period, and large-scale coal enterprise groups of 6 to 80 million tons and 8 to 10 million tons will be established. At the same time, small coal mines will be shut down. And other integrations have been completed and new coal mines have been newly built to bring about new demand for coal mining machinery. Secondly, the increase in the mechanization rate of coal mining has brought demand; at present, the rate of mechanization at about 50% in China is far behind the level of 95% in developed countries. By the end of the “11th Five-Year Planâ€, the mechanization degree of large-scale coal mining in China will reach 95%. More than 80% of medium-sized coal mines and 40% of small-scale coal mines. Finally, update the requirements. The economic life of coal machines is about 8 years. China's coal machinery sales have increased rapidly since 2000, and it is now in the replacement period. Update demand will increase year by year.
We expect that the growth rate of China's raw coal output will be around 10% in the next three years, and the growth rate of investment in fixed assets in the coal mining industry will not be lower than 20%, and the average annual growth rate of coal mining machinery will be over 20%.
Industry listed company investment strategy. At present, listed companies involved in the coal machinery manufacturing business mainly include Taiyuan Heavy Industry, Northern Stock, China Coal Energy and Tiandi Technology. It is recommended to focus on Tiandi Technology (overweight).
Coal Machinery: Multiple Factors Promote Demand Growth
Coal is an important one-time energy source in China. The energy characteristics of “rich coal, lean oil, and low gas†in China determine that coal accounts for a large proportion of the primary energy consumption structure in China. In 2007, China's coal, oil, and natural gas accounted for 70.4%, 20.8%, and 3.3% of the energy consumption structure, respectively, while the world consumption structure was 28.6%, 35.6%, and 25.6%.