Radio-frequency self-referencing system for monitoring drop fibres in wavelength division multiplexing passive optical networks

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Montalvo, J (Author) Other; Montero, DS (Author) Other; Vazquez, C (Author) Other; Baptista, JM (Author) Other; Santos, JL (Author) FCUP

Journal

Title: IET Optoelectronics

Vol. 4 No. 6

Pages: 226-234

ISSN: 1751-8768

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 8 Citations

ISI Web of Science

Scopus - 8 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-003-0HM

DOI: 10.1049/iet-opt.2009.0070

Abstract (EN): A low-cost monitoring system for measuring the optical power losses of drop fibres in wavelength division multiplexing (WDM) passive optical networks (PON) is reported. The proposed system is based on radio-frequency intensity modulation and fibre Bragg grating self-referencing measurement techniques using amplitude normalisation. The monitoring unit is built with an optical broadband light source illuminating the PON from the central office for testing purposes, and the signal processing of the measurements is provided by the low-frequency analogue filters and by a lock-in amplifier. The system allows measuring the optical power losses of the PON branches independently, with increased sensitivity in a re-configurable and flexible way. The monitoring technique has been studied and experimentally validated in a coarse WDM-PON prototype, as a first approach to dense WDM-PON applications. The merits of the proposed monitoring system with regards to other WDM-PON monitoring techniques and the scalability of the proposed system to dense WDM-PON architectures are also discussed.

Language: English

Type (Professor's evaluation): Scientific