Japan Optical Communications has made another breakthrough in the field of optical transmission. According to a report by the Japan Information and Communications Research Institute (NICT) on April 13, NNIC and Fujikura Co., Ltd. (President: Ito Yahiko) have developed a three-mode fiber that can Broadband with standard outside diameter (0.125 mm)
Wavelength multiplexed transmission for cable connection to existing equipment. The study successfully demonstrated transmission experiments above 1045km with a data capacity of 159 Tb/s.
It is well known that multi-mode fibers have different propagation delays between optical signals in different modes, making it difficult to simultaneously satisfy large data rates and long-distance transmissions, and today this experimental achievement shows that these obstacles can be overcome. If you convert the results to data rate and distance
The product of the separation (this is a general indicator of transmission capacity), the result is 166 Pb / s × km, which is the latest world record of standard outer diameter low-mode fiber, and the largest data for any type of standard diameter fiber The rate is over 1000 kilometers.
To achieve 159 Tb/s transmission capacity, mode multiplexing combines 16-QAM (Quadrature Amplitude Modulation), a practical high-density multi-level modulated optical signal for all 348 wavelengths and MIMO (multiple inputs and multiple Output), even after more than 1000 km of transmission
De-scramble the mixed mode signal.
Absolute rotary Encoder measure actual position by generating unique digital codes or bits (instead of pulses) that represent the encoder`s actual position. Single turn absolute encoders output codes that are repeated every full revolution and do not output data to indicate how many revolutions have been made. Multi-turn absolute encoders output a unique code for each shaft position through every rotation, up to 4096 revolutions. Unlike incremental encoders, absolute encoders will retain correct position even if power fails without homing at startup.
Absolute Encoder,Through Hollow Encoder,Absolute Encoder 13 Bit,14 Bit Optical Rotary Encoder
Jilin Lander Intelligent Technology Co., Ltd , https://www.jllandertech.com