Hertz specializes in the acquisition by a flashing spark plug cable end of the phone, the first time confirmed the existence of electromagnetic waves, but he categorically denied the possibility of using electromagnetic waves of mobile phones. In his view, to use electromagnetic waves mobile phones, the need for a considerable area of ??the European continent giant mirrors acquired a large phone plug cable, it is clearly impossible. Hertz discovered electromagnetic waves news spread, to Russia are engaged in a lamp Popov promotion of youth there, he excitedly said: 'With my life energy to install lights on the vast Russia, but according to light a small corner, and if I can direct electromagnetic acquisitions phone plug original, you can overflew the whole world! 'In 1894, Popov improved radio receiver and add an additional antenna to greatly improve sensitivity. In 1896, Popov successfully used radio to transmit Morse code at a distance of 250 meters, the message reads: Haiyinlisi 'Hertz. In the May 18, 1897, another study of young Marconi radio, improved radio transmitting and receiving equipment, in the Bristol Channel radio phone success, the dissemination of information by 12 kilometers. In 1898, Britain held a yacht race, the end is located 20 miles offshore at sea. "Dublin Express" distinguished Marconi as information officers. He used his invention at the end of the race of the wireless telegraph shore viewers timely information about the outcome of the game, causing a great sensation. This is considered to be the first practical radio phone applications. Then, Marconi in Britain to establish the world's first radio equipment company Marconi ^ England. In 1901, the British radio report can be sent across the Atlantic, but then the antenna is made of metal wire holding the kite. 1902 between the United Kingdom and Canada formally launched the transatlantic wireless telegraphy phone circuit, the international telegraph phone people jump into a new stage. In China, the first application of the telegram is guilty of 0 years 1 July Chunghwa Post offered postal telegraph business. 4 fiber optic phone system overview from the beginning of this section, the system introduces the basic concepts of fiber optic phone technology, principles and systems. Including fiber optic phone's basic model and its characteristics, the transmission characteristics of the fiber, commonly used in optical devices, optical amplifiers, optical fiber phone system, ~ 0 ^ 1,309 transmission networks. Through the study of relevant section, the reader development and current status of the fiber of the phone, the basic principles, properties, composition, and have a more comprehensive understanding of the future direction of development. Wave band is divided electromagnetic waves, having a wavelength in the micron level, a frequency of the order of 1016. Wave range including infrared, visible light, ultraviolet light, the wavelength range of 300? 6X104. Visible light from red, orange, yellow, green, blue, indigo, violet successive waves of seven colors, of which the longest wavelength red light to acquire the phone plug, violet has the shortest wavelength. Then a short wavelength is X-rays, gamma rays up. Fiber mobile phone spectrum in the range, the wavelength in the range, are infrared, optical fiber and early development of the mobile phone handset status of light, such as short messages transmitted by the beacon of smoke signals, as shown, Bell light phone 15 using light to transmit voice signals. They can only convey a simple message. And the short-range, low reliability, and the reason is not low-loss transmission medium and high quality mobile sources. Apple's acquisition of the phone plug | Obo Electronics (certified) | Hubei acquisition of the phone plug is supplied by Shenzhen Electronic Technology Co., Obo. Shenzhen City Aobo Electronic Technology Co. (www.aobodz.com) is Shenzhen, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Obo electronic leadership with the staff warmly welcome all inquiries negotiations to create a better future for electronic Obo.