Enhancing the flexibility and functionality of SCNs: demonstration of evolution toward any-core-access, nondirectional, and contentionless spatial channel cross-connects [Invited]

A spatial channel network (SCN) was recently proposed toward the forthcoming spatial division multiplexing (SDM) era, in which the optical layer is explicitly evolved to the hierarchical SDM and wavelength division multiplexing layers, and an optical node is decoupled into a spatial cross-connect (SXC) and wavelength cross-connect to achieve an ultrahigh-capacity optical network in a highly economical manner. In this paper, we report feasibility demonstrations of an evolution scenario regarding the SCN architecture to enhance the flexibility and functionality of spatial channel networking from a simplefixed-core-accessanddirectionalspatial channel ring network to a multidegree,any-core-access,nondirectional, andcore-contentionlessmesh SCN. As key building blocks of SXCs, we introduce what we believe to be novel optical devices: a$1×<#comment/>2$multicore fiber (MCF) splitter, a core selector (CS), and a core and port selector (CPS). We construct free-space optics-based prototypes of these devices using five-core MCFs. Detailed performance evaluations of the prototypes in terms of the insertion loss (IL), polarization-dependent loss (PDL), and intercore cross talk (XT) are conducted. The results show that the prototypes provide satisfactorily low levels of IL, PDL, and XT. We construct a wide variety of reconfigurable spatial add/drop multiplexers (RSADMs) and SXCs in terms of node degree, more »

Authors:
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Award ID(s):
Publication Date:
NSF-PAR ID:
10266638
Journal Name:
Journal of Optical Communications and Networking
Volume:
13
Issue:
8
Page Range or eLocation-ID:
Article No. D80
ISSN:
1943-0620; JOCNBB
Publisher:
Optical Society of America
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