Abstract
In this letter, we characterize the impact of laser phase noise (PN) in direct-detection optical orthogonal frequency-division multiplexing (OFDM) and emphasize its several differences from those in coherent optical OFDM. We also analyze the system performance in the presence of PN for various quadrature-amplitude-modulation formats and provide the bit-error-rate estimation method which can yield reliable results when the PN-induced optical signal-to-noise ratio penalty is lower than ∼2 dB.
Original language | English |
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Article number | 5418993 |
Pages (from-to) | 649-651 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 22 |
Issue number | 9 |
DOIs | |
State | Published - 2010 |
Keywords
- Direct detection
- Optical fiber communication
- Orthogonal frequency-division multiplexing (OFDM)
- Phase noise (PN)