Title :
Demonstration of Low-Cost Uplink Transmission in a Coherent OCDMA PON Using Gain-Switched Fabry–Pérot Lasers With External Injection
Author :
Liu, Jie ; Lu, Yang ; Guo, Changjian ; Hong, Xuezhi ; Xu, Lei ; He, Sailing
Author_Institution :
State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China
fDate :
4/15/2010 12:00:00 AM
Abstract :
We propose and demonstrate a simple and low-cost uplink transmission scheme for coherent optical code-division multiple access (OCDMA) passive optical networks (PONs), using gain-switched Fabry-Perot (GS-FP) lasers with external injection as local light sources at optical network units. Experimental results based on the two-user 1.25-Gb/s OCDMA system confirm the feasibility of this scheme. The system performance is compared with that of the OCDMA system using a conventional mode-locked laser (MLL). The auto-correlation peak to the maximum wing level (P/W) ratio is also given as the central wavelength of the GS-FP laser varies. The present low-cost scheme is highly preferable for OCDMA PON applications.
Keywords :
code division multiple access; light coherence; light transmission; optical communication; optical filters; optical switches; passive networks; quantum well lasers; autocorrelation; coherent OCDMA PON; coherent optical code-division multiple access; external injection; gain-switched Fabry-Perot lasers; light sources; low-cost uplink transmission; optical filter; optical network; passive optical network; quantum-well laser; wing level ratio; Costs; Helium; High speed optical techniques; Laboratories; Laser mode locking; Multiaccess communication; Optical fiber networks; Optical network units; Optical pulses; Passive optical networks; Fabry–Pérot (FP) laser; gain-switching; optical code-division multiple access (OCDMA); passive optical network (PON);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2042948
