Inside the newest handful of decades, Optoelectronic Material Technologies has created at an awesome speed and turned to become a extra and much more sensible and broadly utilised technologies. The look and improvement of fiber optical communication technologies brings new revolution and vibrant future towards the communication market, and virtually eighty % with the communication service is relying around the optical fiber transmission. As a result, as a functional device, the optical switch becomes the essential element inside the optical fiber transmission. Presently, several sorts of optical switches had been created, MMIC chips similar to PM switch, micro optical switch and PM optical switch, and every of them plays distinctive function in a number of fields due to their exclusive functions. Optical switch might be primarily made use of inside the FITL (fiber-in-the-loop), optical fiber network remote monitoring, optical path developing and optical fiber sensing method. As well as these fields, optical device testing and study will take decent benefit from the optical switch at the same time. So far, diverse switch theories and realization tactics of optical switch had been place forward. In accordance with unique theories, optical switch is usually divided into mechanical optical switch, thermal optical switch, PM optical switch and so on. Even though optical fiber switch and absolutely free space optical switch exchange are totally different in their exchange media. Regardless of how do they differ from MMIC products one another, they nonetheless have specific applications in several particular and have awesome possible to bring organization outstanding income. Except that the varieties of optical switch come to be varied, technologies applied inside the generating method turn into diversiform. With these new technologies, optical switch manufacture features a much more and much more massive scale. Along with the switching speed of optical switch has enhanced swiftly as its higher integration. Generally, it has amazing tendency to create to turn out to be a a great deal more trusted and energy-saving kind. To enhance the competitors on the manufacture, new technologies which applied in to the making of optical switch must ensure that it might improve the productivity. Regardless of how a large number of optical switches there happen to be, new sorts of switches will hold on becoming created in accordance with new demands. DWDM multiplexer Nevertheless optical switch has excellent marketplace prospect. And if only the manufactures owns the crucial technologies to create optical switches, the enterprise will take a big market place share inside the future. Together with the improvement in the world's optical fiber communications, there are going to be even more and much more businesses and study institutes that step into this field and take efforts to bring in new technologies and broaden the optical switch market place.