Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links
This paper presents an experimental demonstration of bidirectional 4-PAM transmission for intra-datacenter links using a pair of SMF fibers. In the proposed architecture, each transceiver laser feeds both fibers, which are thus used bidirectionally to double the capacity per used fiber, wavelength,...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8322244/ |
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| author | Dario Pilori Luca Bertignono Antonino Nespola Fabrizio Forghieri Marco Mazzini Roberto Gaudino |
| author_facet | Dario Pilori Luca Bertignono Antonino Nespola Fabrizio Forghieri Marco Mazzini Roberto Gaudino |
| author_sort | Dario Pilori |
| collection | DOAJ |
| description | This paper presents an experimental demonstration of bidirectional 4-PAM transmission for intra-datacenter links using a pair of SMF fibers. In the proposed architecture, each transceiver laser feeds both fibers, which are thus used bidirectionally to double the capacity per used fiber, wavelength, and laser. Besides the experimental demonstration, we also report a theoretical and simulative investigation on the penalty induced in this architecture by spurious connector back-reflections. We show that the resulting penalty can be kept under control for typical realistic connector reflection values, provided that each pair of lasers in both directions are separated by at least twice the system symbol rate. |
| format | Article |
| id | doaj-art-afa49fb989ec4a78b84a830bfaea6557 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-afa49fb989ec4a78b84a830bfaea65572025-08-20T03:15:48ZengIEEEIEEE Photonics Journal1943-06552018-01-0110211010.1109/JPHOT.2018.28171958322244Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter LinksDario Pilori0https://orcid.org/0000-0003-4499-8573Luca Bertignono1Antonino Nespola2Fabrizio Forghieri3Marco Mazzini4Roberto Gaudino5DET, Politecnico di Torino, Torino, ItalyDET, Politecnico di Torino, Torino, ItalyIstituto Superiore Mario Boella, Torino, ItalyCisco Photonics Italy S.r.l., Vimercate, ItalyCisco Photonics Italy S.r.l., Vimercate, ItalyDET, Politecnico di Torino, Torino, ItalyThis paper presents an experimental demonstration of bidirectional 4-PAM transmission for intra-datacenter links using a pair of SMF fibers. In the proposed architecture, each transceiver laser feeds both fibers, which are thus used bidirectionally to double the capacity per used fiber, wavelength, and laser. Besides the experimental demonstration, we also report a theoretical and simulative investigation on the penalty induced in this architecture by spurious connector back-reflections. We show that the resulting penalty can be kept under control for typical realistic connector reflection values, provided that each pair of lasers in both directions are separated by at least twice the system symbol rate.https://ieeexplore.ieee.org/document/8322244/Pulse amplitude modulation (PAM)short-reach optical links100 Gb/s per wavelength transmissiondatacenter interconnect |
| spellingShingle | Dario Pilori Luca Bertignono Antonino Nespola Fabrizio Forghieri Marco Mazzini Roberto Gaudino Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links IEEE Photonics Journal Pulse amplitude modulation (PAM) short-reach optical links 100 Gb/s per wavelength transmission datacenter interconnect |
| title | Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links |
| title_full | Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links |
| title_fullStr | Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links |
| title_full_unstemmed | Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links |
| title_short | Bidirectional 4-PAM to Double Per-Fiber Capacity in 2-km Intra-Datacenter Links |
| title_sort | bidirectional 4 pam to double per fiber capacity in 2 km intra datacenter links |
| topic | Pulse amplitude modulation (PAM) short-reach optical links 100 Gb/s per wavelength transmission datacenter interconnect |
| url | https://ieeexplore.ieee.org/document/8322244/ |
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