Abstract

In this paper, we review the latest progress in the simplified digital coherent technologies suitable for future beyond-100G optical access systems, which will be a key optical transport platform for meeting the very wide range of extreme requirements of beyond-5G (B5G) and 6G users. As the centerpiece of beyond-100G optical access systems, the technical challenges and recent demonstrations of ultimate-capacity passive optical network systems carrying more than 100 Gb/s per wavelength by using simplified digital coherent technologies incorporating low-complexity digital signal processing (DSP) are presented. In addition, to facilitate the implementation of these relatively large-scale digital coherent technologies in the optical access area, which has strict cost, power consumption, and size restraints, the rapid progress in compact optical transceiver form factors and optical devices heading toward 400 Gb/s-based Ethernet transceivers for the 80 km range (400G-ZR) and over 800 Gb/s short-reach applications based on the digital coherent technologies are also discussed. Furthermore, the recent expansion of simplified digital coherent-based optical access systems such as optical space communications and their latest experimental demonstrations are introduced as an alternative evolution of beyond-100G optical access systems, going hand in hand with the reduction of complexity of the real-life digital coherent platforms such as the DSP large-scale integration and the large-scale field programmable gate arrays.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical access network interfaces for 5G and beyond [Invited]

Fabienne Saliou, Philippe Chanclou, Luiz Anet Neto, Gael Simon, Jeremy Potet, Mathilde Gay, Laurent Bramerie, and Helene Debregeas
J. Opt. Commun. Netw. 13(8) D32-D42 (2021)

The Art of 6G (TAO 6G): how to wire Society 5.0 [Invited]

Martin Maier, Amin Ebrahimzadeh, Abdeljalil Beniiche, and Sajjad Rostami
J. Opt. Commun. Netw. 14(2) A101-A112 (2022)

Transceiver technologies for passive optical networks: past, present, and future [Invited Tutorial]

Vincent Houtsma, Amitkumar Mahadevan, Noriaki Kaneda, and Doutje van Veen
J. Opt. Commun. Netw. 13(1) A44-A55 (2021)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (16)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription