Abstract
Essential technologies for stabilizing the operation of coherent optical-fiber communication systems, such as packaging, several automatic control technologies, and an automatic start-up procedure are described. In particular, polarization fluctuation compensation is shown to be indispensable for coherent system operation. Both a polarization control system and a polarization diversity receiver were developed, and stable operation was achieved in each system, which greatly improved the practicability of the coherent systems. Using several technologies, 10-h error-free operation was achieved in a 400-Mb/s-162-km FSK (frequency shift keying) heterodyne single filter detection system. this 10-h error-free operation, which corresponds to less than a 7*10/sup -14/ error rate, greatly advanced the feasibility of achieving an actually operating coherent system. >
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
