Abstract

We develop an in-service dispersion monitoring technique based on the optical frequency modulation (FM) method and examine its applicability to wavelength division multiplexing (WDM) long-haul transmission systems. This method is insensitive to the group-delay drift induced by environmental perturbations and can measure the dispersion value with its sign (normal or anomalous) accurately only from the received signal light. These features are very attractive for the application in ultralong-haul transmission systems. We implement the in-service dispersion monitor in a 32 × 10.7 Gbit/s WDM transmission system. Accurate dispersion monitoring at a transmission distance of 5950 km is achieved without any bit error rate (BER) penalty. Also, we discuss the applicability of the optical FM method to higher bit-rate systems from the experimental result.

© 2004 IEEE

In-service monitoring of 16 port × 32 wavelength bi-directional WDM-PON systems with a tunable, coded optical time domain reflectometry

Jeonghwan Lee, Jonghan Park, Jae Gwang Shim, Hosung Yoon, Jin Hee Kim, Kyoungmin Kim, Jae-Oh Byun, and Namkyoo Park
Opt. Express 15(11) 6874-6882 (2007)

Simultaneous clock recovery and dispersion, OSNR monitoring for 112-Gbit/s NRZ-DQPSK using frequency down-conversion electro-optical phase-locked loop

He Wen, Lin Cheng, Jinxin Liao, Xiaoping Zheng, Hanyi Zhang, Yili Guo, and Bingkun Zhou
Opt. Express 19(26) B687-B701 (2011)

448 Gbit/s, 32 Gbaud 128 QAM coherent transmission over 150 km with a potential spectral efficiency of 10.7 bit/s/Hz

Keisuke Kasai, Yixin Wang, David Odeke Otuya, Masato Yoshida, and Masataka Nakazawa
Opt. Express 23(22) 28423-28429 (2015)

All-photonic 20-MHz clock for latency monitoring in a 5G network at 10 Gbps over optical fiber

Ketshabile Nfanyana, Shukree Wassin, Reinhard Karembera, James Jena, and Tim Gibbon
J. Opt. Soc. Am. B 37(11) A202-A206 (2020)

Performance evaluation of hybrid DPSK-MPPM techniques in long-haul optical transmission

Abdulaziz E. El-Fiqi, Ahmed E. Morra, Salem F. Hegazy, Hossam M. H. Shalaby, Kazutoshi Kato, and Salah S. A. Obayya
Appl. Opt. 55(21) 5614-5622 (2016)