Christoph Wree, Member, IEEE, Suhas Bhandare, Member, IEEE, Donald Becker, Member, IEEE, Daniel Mohr, and Abhay Joshi
Discovery Semiconductors, Inc.
119 Silvia Street
Ewing, New Jersey, 08628, USA
Record repeaterless transmission of differential phase-shift keying (DPSK) t 10.7 Gb/s over 304 km of standard single-mode fiber (SSMF) is demonstrated using a coherent optical receiver and electronic dispersion compensation. This is the longest repeaterless 10-Gb/s transmission over SSMF in the absence of Raman amplifiers. The high receiver sensitivity and the high tolerence to nonlinearities of DPSK allows us to overcome a total link loss of 58 dB with a 3-dB system margin. Coherent detection enables linear electrical dispersion compensation and avoids the use of optical dispersion compensation.
*IEEE Photonics Technology Letters, Vol. 20, No. 6, March 15, 2008