1G / 10G coexistence long-reach PON system using ALC burst-mode SOAs

Abstract

This paper evaluates the allowable loss ranges of 1G / 10G dual-rate symmetric long-reach 10 gigabit Ethernet passive optical networks (10G-EPONs) that employ cascaded semiconductor optical amplifiers with fast automatic level controlled circuit (ALC-SOAs) for upstream transmission and a single SOA for downstream transmission. Experiments show that our optical amplifiers have the ability to achieve the maximum loss budget of 61 dB with very wide loss ranges for both access and trunk spans; they support up to 80 km transmission (60 km trunk span and 20 km access span). Keywords: PON, access system, 1G / 10G coexistence, SOA, ALC Classification: Fiber-optic communication References[1] N. Suzuki and J. Nakagawa, "First demonstration of full burst optical amplified GE-PON uplink with extended system budget of up to 128 ONU splits and 58 km reach,"