IEEE Std 802.3cn
“Standard for Ethernet Amendment 4: Physical Layers and Management Parameters for 50 Gb/s, 200 Gb/s, and 400 Gb/s Operation over Single-Mode Fiber” was developed by the IEEE P802.3cn 50 Gb/s, 200 Gb/s, and 400 Gb/s over greater than 10 km of SMF Task Force and approved by the IEEE-SA Standards Board on November 7, 2019. At the time this amendment was developed, there were no 50 Gb/s, 200 Gb/s, or 400 Gb/s Ethernet applications supporting reach greater than 10 km. This amendment defines three Physical Layer (PHY) specifications and management parameters for extended reach 50 Gb/s, 200 Gb/s, and 400 Gb/s operation over single‑mode optical fiber cabling. These solutions support optional Energy Efficient Ethernet (EEE) except deep sleep mode.
The three new PHY specifications are:
50GBASE-ER: 50 Gb/s serial transmission using 4‑level pulse amplitude modulation over one wavelength (2 fibers total) of single‑mode fiber, with reach up to at least 40 km
200GBASE-ER: 200 Gb/s transmission using 4‑level pulse amplitude modulation over four WDM lanes (2 fibers total) of single‑mode fiber, with reach up to at least 40 km
400GBASE-ER: 400 Gb/s transmission using 4‑level pulse amplitude modulation over eight WDM lanes (2 fibers total) of single‑mode fiber, with reach up to at least 40 km
Goals and Objectives:
- Support full-duplex operation only
- Preserve the Ethernet frame format utilizing the Ethernet MAC
- Preserve minimum and maximum Frame Size of current Ethernet standard
- Provide appropriate support for OTN
- 50GBASE-ER will
- Support a MAC data rate of 50 Gb/s
- Support a BER of better than or equal to 10-12 at the MAC/PLS service interface (or the frame loss ratio equivalent) for 50 Gb/s
- Provide a physical layer specification which supports 50 Gb/s operation over at least 40 km of SMF
- 200GBASE-ER will:
- Support a MAC data rate of 200 Gb/s
- Support a BER of better than or equal to 10-13 at the MAC/PLS service interface (or the frame loss ratio equivalent) for 200 Gb/s
- Provide a physical layer specification supporting 200 Gb/s operation over four wavelengths capable of at least 40 km of SMF
- 400GBASE-ER will:
- Support a MAC data rate of 400 Gb/s
- Support a BER of better than or equal to 10-13 at the MAC/PLS service interface (or the frame loss ratio equivalent) for 400 Gb/s
- Provide a physical layer specification supporting 400 Gb/s operation over eight wavelengths capable of at least 40 km of SMF
The Beyond 10km Optical PHYs Call-For-Interest Consensus Presentation can be found here: http://www.ieee802.org/3/cfi/0717_1/CFI_01_0717.pdf
The Project Authorization Request (PAR), approved on February 8, 2019, can be found here: https://development.standards.ieee.org/get-file/P802.3cn.pdf?t=99813600003
The project objectives, approved February 12, 2019, can be found here: http://www.ieee802.org/3/cn/proj_doc/3cn_Objectives_190212.pdf
The post IEEE Std 802.3cn-2019: 50 Gb/s, 200 Gb/s, and 400 Gb/s Operation over Single-Mode Fiber appeared first on Standards Informant.
