Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31023
Monitoring and Fault-Recovery Capacity with Waveguide Grating-based Optical Switch over WDM/OCDMA-PON

Authors: Yao-Tang Chang, Chuen-Ching Wang, Shu-Han Hu


In order to implement flexibility as well as survivable capacities over passive optical network (PON), a new automatic random fault-recovery mechanism with array-waveguide-grating based (AWG-based) optical switch (OSW) is presented. Firstly, wavelength-division-multiplexing and optical code-division multiple-access (WDM/OCDMA) scheme are configured to meet the various geographical locations requirement between optical network unit (ONU) and optical line terminal (OLT). The AWG-base optical switch is designed and viewed as central star-mesh topology to prohibit/decrease the duplicated redundant elements such as fiber and transceiver as well. Hence, by simple monitoring and routing switch algorithm, random fault-recovery capacity is achieved over bi-directional (up/downstream) WDM/OCDMA scheme. When error of distribution fiber (DF) takes place or bit-error-rate (BER) is higher than 10-9 requirement, the primary/slave AWG-based OSW are adjusted and controlled dynamically to restore the affected ONU groups via the other working DFs immediately.

Keywords: Random fault recovery mechanism, Array-waveguide-grating based optical switch (AWG- based OSW), wavelength-division-multiplexing and optical code-divisionmultiple-access (WDM/ OCDMA)

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1332


[1] K.S. Kim, "On the evolution of PON-based FTTH solutions," Information Sciences, vol. 149/1-2, pp. 21-30, Jan. 2003.
[2] ITU-T, Recommendation "Broadband optical access systems based on passive optical networks (PON)," ITU-T, Recommendation G. 983.1, 1998.
[3] T.J. Chan, C.K. Chan, L.K. Chen, F. Tong, "A self- protected architecture for wavelength division multiplexed passive optical networks," IEEE Photon. Technol. Lett. 15 (11), pp. 1660-1662, 2003.
[4] C.M. Lee, T.J. Chan, C.K. Chan, L.K. Chen, C. Lin, "A group protection architecture for traffic restoration in multi-wavelength passive optical networks," European Conference on Optical Communication (ECOC), 2003, Th2.4.2.
[5] Z.X. Wang, X.F. Sun, C.L. Lin, C.K. Chan, L.K. Chen, "A novel centrally controlled protection scheme for traffic restoration in WDM passive optical networks, "IEEE Photon. Technol. Lett. 17 (3) pp. 717-719, 2005.
[6] C.C. Sue, "A novel 1:N protection scheme for WDM passive optical networks, "IEEE Photon. Technol. Lett. 18 (13) (2006) 1472-1474.
[7] C.C. Sue, 1:N protection scheme for AWG-based WDM PONs, " IEEE Globecom, San Francisco, Dec. 2006, OPN01-1.
[8] X. Sun, C.K. Chan, L.K. Chen, "A survivable WDM-PON architecture with centralized alternate-path protection switching for traffic restoration, " IEEE Photon. Technol. Lett. 18 (4) (2006) 631-633.
[9] N. Karafolas and D. Uttamchandani, "Optical Fiber code Division Multiple Access Networks: A Review," Optical Fiber Technology, vol. 2, pp. 149-168, April 1996.
[10] C. Yang, Jen-Fa Huang, and S. Tseng, "Optical CDMA network codecs structured with M-sequence codes over waveguide-grating router," IEEE Photon. Technol. Lett., vol. 16, pp. 641-643, Feb. 2005.
[11] J.F. Huang, Y.T. Chang and C.C. Hsu, "Hybrid WDM and optical CDMA implemented over waveguide- grating-based fiber-to-the-home networks, " Opt. Fiber Technol. 13 (3), pp. 215-225, 2007.