Simultaneous Transmission of Photonic Services over One Fiber with an ITU 100 GHz Grid.

Tomas Horvath,Petr Munster,Josef Vojtech,Vladimir Smotlacha

doi:10.3390/s19071601

Abstract

The increasing interest in distributed sensors and the decreasing price of optical components have led to leveraging the use of existing fiber in deployments over optical networks and more application possibilities (from seismic activity measurement to perimeter protection and tunnel fire detection). Because of the possibility of data interference in single fibers, dark fibers are used. On the one hand, optical networks are able to transfer popular services, such as streaming and data transmission, and on the other hand, special advanced services such as an accurate time, a stable frequency, and high-power optical sensor signals can be provided. In our work, we address the simultaneous transmission of an accurate time, 100 G data, and a high-power optical sensor based on Phase-sensitive optical time domain reflectometer (-OTDR). The measurement setup consists of the optical fiber G.652 (7 km), G.653 (7 km), and G.655 (10 km) and a combination of G.652D + G.653 (14 km). Moreover, we also provide results for their combination. The services were transferred in single fiber with an ITU 100 GHz channel spacing grid. We performed a set of measurements with an evaluation of the BER value for data transmission affected by a high-power sensor system and accurate time values. The results confirmed our assumptions that 100 GHz spacing is not large enough, especially with the increasing power level of the sensor system. The main aim of the article is to determine whether data are disturbed with normal 100 GHz channel spacing.

Highlights

At present, the literature suggests that data transmission will keep following the current trend, i.e., the continuous increase in the amount of data being transferred
Since we have designed and developed our own (Φ-OTDR), we have developed interferometric distributed systems based on Mach-Zehnder or Michelson interferometers, and we can compare their benefits
It can be assumed that low power duration will result in the availability of a service throughout the testing, whereas a gradual increase in pulse duration will eventually affect the data signal

Summary

Introduction

The literature suggests that data transmission will keep following the current trend, i.e., the continuous increase in the amount of data being transferred. Based on the report by Cisco [1], it is clear that in 2017, ≈122 EB of data were transmitted in a month, whereas in 2018, this figure reached ≈156 EB. By 2022, this amount of data is expected to increase up to 396 EB. One of the reasons for the increasing data transfer could be a wider deployment of high-speed interfaces on backbone networks and access networks. Customers of the access network at the edge of the millennium shared ≈155 Mbps. Today’s standards allow for sharing a transmission capacity of 10 to

Objectives

Results

Conclusion