Abstract
In this paper, we propose a new versatile routing device that utilizes arrayed waveguide gratings (AWGs), optical switches, and optical circulators to implement reconfigurable optical add/drop multiplexers (ROADMs), optical interleavers, and optical cross-connect (OXC). With the development of dense wavelength division multiplexing (DWDM) technology, ROADM and OXC technologies have also been put into practical use. Thus, the optical signal can be routed directly in the optical network according to its wavelength without the need for optical-electrical-optical (OEO) conversion. Although different optical network units (ONUs) have different bandwidth requirements, the use of optical interleavers has successfully solved the connection problem between old and new systems. According to the numerical experiments of static characteristics, the proposed routing device can effectively implement three different functionalities, thereby providing greater flexibility for fiber optic network applications.
Highlights
In today’s era, there is an explosion of information and the amount of transmitted network data is growing at a rate of 7% to 20% per month
We used optical spectrum analyzers (OSAs) to measure static performance to verify the feasibility of its function and evaluate the performance of the optical interleaver, OXC, and reconfigurable optical add/drop multiplexers (ROADMs) functionalities
The insertion loss of the C-band of the various components of the proposed router, arrayed waveguide gratings (AWGs), WDM, SW and optical circulators (OCs) were set to 2.2 dB, 1.5 dB, 1 dB and 0.7 dB, respectively
Summary
In today’s era, there is an explosion of information and the amount of transmitted network data is growing at a rate of 7% to 20% per month. Systems containing reconfigurable optical add/drop multiplexers (ROADMs) and optical cross-connects (OXCs) have generated a large number of development requirements [1,2,3]. OXC and ROADM are the key technologies for signal wavelength switching between these optical network nodes. DWDM, ROADM, OXC, and optical interleavers can be used to automatically configure all signal wavelengths on ROADM nodes to increase backbone bandwidth or provide flexible bandwidth allocation techniques. As far as we know, some published literature uses optical circulators and tunable FBGs to build OXC systems [25,26] This architecture successfully completed the purpose of multi-signal wavelength switching. The proposed router can be used as a DWDM metropolitan area network, inter-domain switching medium (OXC function), and can help connect new and old systems (interleaver function) to increase network flexibility. 30 dB when the ROADM is executed, which improves the performance of the system
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