title: Experimental demonstration of wavelength domain rogue-free ONU based on wavelength-pairing for TDM/WDM optical access networks.
abstract: In this study, we propose and experimentally demonstrate a wavelength domain rogue-free ONU based on wavelength-pairing of downstream and upstream signals for time/wavelength division-multiplexed optical access networks. The wavelength-pairing tunable filter is aligned to the upstream wavelength channel by aligning it to one of the downstream wavelength channels. Wavelength-pairing is implemented with a compact and cyclic Si-AWG integrated with a Ge-PD. The pairing filter covered four 100 GHz-spaced wavelength channels. The feasibility of the wavelength domain rogue-free operation is investigated by emulating malfunction of the misaligned laser. The wavelength-pairing tunable filter based on the Si-AWG blocks the upstream signal in the non-assigned wavelength channel before data collision with other ONUs.
authors.forename: Jie Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: Heuk
authors.initials: H
authors.lastname: Park
authors.forename: Sae-Kyoung
authors.initials: SK
authors.lastname: Kang
authors.forename: Joon Ki
authors.initials: JK
authors.lastname: Lee
authors.forename: Hwan Seok
authors.initials: HS
authors.lastname: Chung