title: All-optical modulation-transparent wavelength multicasting in a highly nonlinear fiber Sagnac loop mirror.
abstract: An all-optical wavelength multicasting scheme using four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) Sagnac loop mirror has been demonstrated. This proposed scheme has the advantage that even when the wavelength of a multicast channel overlaps with the pump-pump generated idler, clear eye diagram can still be observed. Six and ten 10-Gb/s multicast channels, compliant with the ITU grid, are successfully obtained by using two- and three-pump lasers, respectively. Multicasting of on-off shift keying (OOK) and differential phase-shift keying (DPSK) signals are both successfully demonstrated. The maximum power penalty of the multicast channels is less than 3.5 dB. Furthermore, compared with the non-loop configuration, up to 1.2 dB power penalty improvement can be achieved in this proposed Sagnac loop configuration.
authors.affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore. wang0365@ntu.edu.sg
authors.forename: Dawei
authors.initials: D
authors.lastname: Wang
authors.forename: Tee-Hiang
authors.initials: TH
authors.lastname: Cheng
authors.forename: Yong-Kee
authors.initials: YK
authors.lastname: Yeo
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.forename: Zhaowen
authors.initials: Z
authors.lastname: Xu
authors.forename: Yixin
authors.initials: Y
authors.lastname: Wang
authors.forename: Gaoxi
authors.initials: G
authors.lastname: Xiao
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007909:Lenses; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*