Abstract
We propose and demonstrate the feasibility of using all-optical orthogonal frequency division multiplexing (AO-OFDM) for the convergent optical wired and wireless access networks. AO-OFDM relies on all-optically generated orthogonal subcarriers; hence, high data rate (> 100 Gb/s) can be easily achieved without hitting the speed limit of electronic digital-to-analog and analog-to-digital converters (DAC/ADC). A proof-of-concept convergent access network using AO-OFDM super-channel (SC) is demonstrated supporting 40 - 100 Gb/s wired and gigabit/s 100 GHz millimeter-wave (MMW) ROF transmissions.
Highlights
Broadband wired networks based on passive optical network (PON) access technologies can provide high bandwidth services to users using low loss and low cost optical fibers [1]
The orthogonal frequency division multiplexing (O-OFDM) generation is based on off-line Matlab program, including serial-to-parallel conversion, quadrature amplitude modulation (QAM) symbol encoding, and inverse fast Fourier transform (IFFT)
O-OFDM is a promising candidate for the future high-speed optical access networks
Summary
Broadband wired networks based on passive optical network (PON) access technologies can provide high bandwidth services to users using low loss and low cost optical fibers [1]. They are not flexible enough to allow convenient roaming connections. Major carriers have a similar predication (known as Edholm’s Law of bandwidth) [6] It states that the data rate increase of wireless communication will be much faster than that in wired communication. AO-OFDM relies on alloptically generated orthogonal subcarriers; high data rate (> 100 Gb/s) can be achieved without hitting the speed limit of electronic DAC/ADC. A proof-of-concept convergent access network using AO-OFDM super-channel (SC) is demonstrated supporting 40 – 100 Gb/s wired and gigabit/s 100 GHz millimeter-wave (MMW) ROF transmissions
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