Colorless FDMA-PON with flexible bandwidth allocation and colorless, low-speed ONUs [invited]
We demonstrate a remotely seeded flexible passive optical network (PON) with multiple low-speed subscribers but only a single optical line terminal transceiver operating at a data rate of 31.25 Gbits/s. The scheme is based on a colorless frequency division multiplexing (FDM)-PON with centralized wavelength control. Multiplexing and demultiplexing in the optical network unit (ONU) is performed in the electronic domain and relies either on FDM with Nyquist sinc-pulse shaping or on orthogonal frequency division multiplexing (OFDM). This way the ONU can perform processing at low speed in the baseband. Further, the ONU is colorless by means of a remote seed for upstream transmission and a remote local oscillator for heterodyne reception, all of which helps in keeping maintenance and costs for an ONU potentially low and will simplify wavelength allocation in a future software defined network architecture. To extend the reach, semiconductor optical amplifiers are used for optical amplification in the downstream and upstream.
Item Type | Article |
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Keywords | access network digital signal processing frequency division multiple access nyquist optical fiber networks passive optical network pulse-shaping semiconductor optical amplifier |
Date Deposited | 15 May 2025 12:42 |
Last Modified | 30 May 2025 23:56 |
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picture_as_pdf - 06645114_JOCN_Colorless_FDMA_PON_with_flexible_bandwidth_allocation_and_colorless_low_speed_ONUs.pdf
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