10-Gb/s Repeaterless Transmission Using Standard Single-Mode Fiber with Pre-Chirping and Dispersion Compensation Techniques

George ISHIKAWA, Motoyoshi SEKIYA, Hiroshi ONAKA, Terumi CHIKAMA, Hiroshi NISHIMOTO

Summary :

This paper proposes that a combination of pre-chirping and dispersion compensation is effective in suppressing the waveform distortion due to the self-phase modulation and the group-velocity dispersion in 10 Gb/s repeaterless transmission using 1.3-µm zero-dispersion single-mode fibers (SMF) operating at a wavelength of 1.55µm. The following results were obtained through simulation. 1) Setting the α-parameter of a LiNbO₃ optical modulator negative (α1.0) gives a large tolerance of the launched power P_in. 2) For 90-km SMF transmission, the maximum P_in is obtained when the dispersion compensation ratio β is from 50% to 70%. 3) For the allowable β as a function of the transmission distance when a dispersion compensator is located in the receiver (post-compensation scheme), the lower limit of β is determined by the constant residual dispersion value, which agrees well with the dispersion tolerance without dispersion compensation. Our 90-km SMF transmission experiments using a LiNbO₃ optical modulator and a dispersion compensating fiber (DCF) confirmed the simulation results regarding the optimum value of β and the large tolerance of the fiber launched power. Based on the above investigations, we achieved a 10-Gb/s repeaterless 140-km SMF transmission with α1.0 and post-compensation.

• Publication: IEICE TRANSACTIONS on Electronics Vol.E78-C No.1 pp.43-49
• Publication Date: 1995/01/25
• Type of Manuscript: Special Section PAPER (Special Issue on Ultrafast Optoelectronics)

Authors

George ISHIKAWA
Motoyoshi SEKIYA
Hiroshi ONAKA
Terumi CHIKAMA
Hiroshi NISHIMOTO

Keyword

optical communication,  SMF,  repeaterless transmission,  pre-chirping,  dispersion compensation