3.125 Gbit/s CMOS transceiver for duobinary modulation over 50‐m SI‐POF channels

Abstract

This Letter presents a novel CMOS transceiver for short-reach multigigabit communication over step-index plastic optical fibre (SI-POF), a very interesting transmission medium for industrial and home-end applications due to its low cost, ease of handling and inherent immunity to electromagnetic interference. The transceiver uses amplitude duobinary modulation, which is added to continuous-time equalisation. For that purpose, a duobinary precoder and a duobinary decoder have been fabricated in a standard 0.18-µm CMOS technology, consuming only 28.4 mW. The system enables a 50-m SI-POF channel bandlimited to 100 MHz to operate at a data bit rate of 3.125 Gbit/s.

Latest Achievements in Polymer Optical Fiber Gratings: Fabrication and Applications

“…Due to increasing numbers of emerging services, such as intelligent home systems, visible light communications, etc., in indoor networks, the increase of high-capacity demand shifts from long-haul systems to short-range communication links. Indeed, POFs are good candidates for short-range communications [13][14][15][16][17][18][19][20][21], with low weight and high transmission capacity. Accordingly, Professor Koike and his research group demonstrated data transmission over POF in 1995 [22], where they reported 2.5 Gb/s 100 m data transmission using GI POF at 650 nm wavelength; more recently, in 2016, they developed 120 Gb/s GI POF, as well as the ballpoint pen interconnection technology 2 of 18 for uncompressed 4K/8K video transmission [23].…”

Improved Precoder Architecture for Duobinary Transceivers

“…The use of techniques to enhance the bandwidth of the communication link, such as equalization or baseband modulation, is mandatory to exceed 1 Gbps in short-range communications. In this frame, duobinary baseband modulation is a very interesting option because it offers the best trade-off between the three most important features of a modulation scheme: data rate, signal to noise ratio (SNR) and power consumption [1]. Duobinary doubles the data rate with respect to standard NRZ modulation by simple and low-power circuitry, without suffering as much SNR penalty as other modulation formats, like 4-PAM.…”

Μελέτη Τοπικών Δικτύων Που Βασίζονται Σε Ενσύρματα Και Ασύρματα Οπτικά Μέσα

“…Ωστόσο, δεν είχε βελτιστοποιηθεί το κομμάτι της εκπομπής όσον αφορά την επίδραση φαινομένων μη γραμμικότητας της πηγής. Λαμβάνοντας υπόψη τα ευνοϊκά χαρακτηριστικά του Duobinary σχήματος διαμόρφωσης, κατασκευάστηκε κατάλληλο κύκλωμα προ-κωδικοποίησης και αποκωδικοποίησης για την επεξεργασία σημάτων διαμορφωμένα κατά το συγκεκριμένο σχήμα διαμόρφωσης [79]. Σε φάση σχεδιασμού, εξετάστηκε η μετάδοση σήματος σε ρυθμό 3.125 Gbit/s (με BER = 10 -12 και ευαισθησία -15 dBm) κατά μήκος 50 μέτρων SI-POF, θεωρώντας εξίσωση καναλιού στο δέκτη αποδίδοντας εξισωμένη ζεύξη εύρους ζώνης 700 MHz [79].…”