title: A hybrid WDM/OCDMA ring with a dynamic add/drop function based on Fourier code for local area networks.
abstract: We propose and experimentally demonstrate a hybrid WDM/OCDMA ring with a dynamic add/drop function based on Fourier code for local area networks. Dynamic function is implemented by mechanically tuning the Fourier encoder/decoder for optical code division multiple access (OCDMA) encoding/decoding. Wavelength division multiplexing (WDM) is utilized for node assignment and 4-chip Fourier code recovers the matched signal from the codes. For an optical source well adapted to WDM channels and its short optical pulse generation, reflective semiconductor optical amplifiers (RSOAs) are used with a fiber Bragg grating (FBG) and gain-switched. To demonstrate we experimentally investigated a two-node hybrid WDM/OCDMA ring with a 4-chip Fourier encoder/decoder fabricated by cascading four FBGs with the bit error rate (BER) of <10(-9) for the node span of 10.64 km at 1.25 Gb/s.
authors: School of Information and Communications, Gwangju Institute of Science and Technology, Buk-Gu, Gwangju, South Korea.
authors: Yong-Kyu
authors: YK
authors: Choi
authors: Kenta
authors: K
authors: Hosoya
authors: Chung Ghiu
authors: CG
authors: Lee
authors: Masanori
authors: M
authors: Hanawa
authors: Chang-Soo
authors: CS
authors: Park
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D044962:Data Compression / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005583:Fourier Analysis; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*