Inter-layer communication for improving restoration time in optical networks

Abstract

The restoration time in high capacity optical networks has to be kept as short as possible in order to avoid a huge loss of data. This paper discusses several methods to improve restoration time in optical networks and we propose the use of error codes that will trigger immediately the appropriate layer recovery mechanism, which is the best to handle a given fault.

Enabling internal methods in passive optical network architecture for next generation OFDM‐PON supporting radio‐over‐fiber

“…Since the main objective of the future generation telecommunication networks is focused to provide a high speed, cost effective, in recent days, OFDM is attaining lot of popularity for its numerous advantages; in this paper, the idea is to use the concepts of OFDM in PON . We perform a high‐speed and high‐spectral efficiency–based modulation in all subcarriers of OFDM, which is able to provide high data rate with low bandwidth optical components . ROF is a technique in which we transmit the light signals, which are modified by a high‐frequency signal, and then, the transmitted signal is transmitted through an optical fiber.…”

“…[5][6][7][8][9][10] We perform a high-speed and high-spectral efficiency-based modulation in all subcarriers of OFDM, which is able to provide high data rate with low bandwidth optical components. [11][12][13][14][15][16][17][18] ROF is a technique in which we transmit the light signals, which are modified by a high-frequency signal, and then, the transmitted signal is transmitted through an optical fiber. The main advantages of ROF is that it can be easily covered in areas which are tough for normal network to be installed and the optical network can also be extended in wireless form using ROF.…”

Wavelength layer recovery in transparent optical networks

“…Realizing recovery capabilities in WSONs is a difficult objective both in terms of network control and in terms of physical design [12,20,25]. Following the terminology specified in [17], this paper examines the capabilities offered by a Generalized Multiprotocol Label Switching (GMPLS)-controlled network [24] for which it is possible to automatically recover a working lambda (i.e., wavelength) label switched path (L-LSP) once a failure arises.…”