Title :
Novel mode converter based on hollow optical fiber for Gigabit LAN communication
Author :
Choi, S. ; Oh, K. ; Shin, W. ; Park, C.S. ; Paek, U.C. ; Park, K.J. ; Chung, Yun C. ; Kim, Y. ; Lee, Y.G.
Author_Institution :
Dept. of Inf. & Commun., Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
A novel mode converter based on a hollow optical fiber is proposed to reduce the differential modal delay penalty in optical transmission over multimode fibers (MMFs). The device adiabatically converts a fundamental mode in a single-mode fiber to a ring-shaped mode in order to excite selectively a set of higher order modes with a similar group velocity in MMF, maintaining center-launching configuration. The mode converter is composed of serially concatenated concentric segments of a single-mode, hollow, and multimode optical fiber. For 2.5-Gb/s transmission over 500-m-long MMF using a laser diode transmitter, the proposed mode converter shows improvement in bit-error-rate performance at both wavelengths of 1.31 and 1.55 μm.
Keywords :
error statistics; optical communication equipment; optical fibre LAN; optical fibre dispersion; 1.31 micron; 1.55 micron; 2.5 Gbit/s; Gigabit Ethernet; Gigabit LAN communication; center-launching configuration; differential modal delay penalty; eye diagram; far-field pattern; fundamental mode; high-speed fiber links; hollow optical fiber; insertion loss; laser diode transmitter; modal dispersion; mode converter; multimode fibers; refractive index profile; ring-shaped mode; serially concatenated concentric segments; single-mode fiber; Concatenated codes; Delay; Diode lasers; Laser excitation; Local area networks; Optical fiber LAN; Optical fiber devices; Optical fibers; Optical transmitters; Wavelength converters;
Journal_Title :
Photonics Technology Letters, IEEE
