Novel WDM-PON System with Shared Wavelength Locking and Full C-Band Tunability

Konferenz: Photonische Netze - Vorträge der 15. ITG-Fachtagung
05.05.2014 - 06.05.2014 in Leipzig, Deutschland

Tagungsband: Photonische Netze

Seiten: 5Sprache: EnglischTyp: PDF

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Pachnicke, S.; Lawin, M.; Eiselt, M. (ADVA Optical Networking SE, Maerzenquelle 1-3, 98617 Meiningen, Germany)
Zhu, J.; Wonfor, A.; Penty, R. V.; White, I. H. (Center for Photonic Systems, Electrical Engineering Division, Engineering Department, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom)
Cush, R.; Turner, R.; Firth, P.; Wale, M. (Oclaro Technology Ltd., Caswell, Towcester, Northamptonshire, NN12 8 EQ, United Kingdom)
Elbers, J.-P. (ADVA Optical Networking SE, Fraunhoferstr. 9a, 82152 Martinsried / Munich, Germany)

In this article the operation of a novel, prototypical WDM-PON system with bi-directional data rates of up to 10.3 Gb/s is experimentally demonstrated. In the optical line terminal (OLT) a novel photonic integrated circuit (PIC) is deployed integrating an array of tunable lasers with Mach-Zehnder modulators and a star coupler. Wavelength control is achieved by a pilot-tone based scheme with a shared wavelength-locker (etalon). In the optical network unit (ONU) a novel Aluminium-containing laser is used, which has been specially designed for operation between 70deg C to 90deg C without requiring a thermo-electric cooler (TEC). For reduced cost and complexity the tunable laser is not equipped with an etalon. Instead it employs a generic contol algorithm, which is augmented by a pilot tone based scheme is used for centralized wavelength locking of all channels at the OLT.