Title | ||
---|---|---|
Simple Self-Homodyne Detection Scheme for Optical OFDM With Inserted Pilot Subframes and Application in Optical Access Networks. |
Abstract | ||
---|---|---|
In this paper, a simple self-homodyne detection scheme is proposed and experimentally demonstrated for applications in optical access networks. Unmodulated pilot subframes are periodically inserted and interleaved with data subframes to form an orthogonal frequency-division multiplexing (OFDM) signal. Owing to the coherence between the embedded pilot and data subframes, a Mach-Zehnder delay interferometer with a free spectral range equal to the frequency of the subframe is deployed for the self-homodyne detection of the OFDM signal. It saves the local oscillator and optical hybrid, which are usually used in a conventional coherent receiver, thus reducing the hardware complexity and implementation cost. Meanwhile, the digital signal processing (DSP) for the self-homodyne detection is free from carrier-frequency-offset compensation and carrier-phase estimation, reducing the complexity, power consumption, and latency of the system. It also allows the use of a low-cost laser source as the source for the downstream signal. The proposed scheme provides a cost-effective and energy-efficient downstream solution for optical access networks, owing to the hardware saving and complexity reduction in DSP. A 10-Gb/s OFDM downstream transmission over a 20-km standard single-mode fiber is experimentally demonstrated with an error-free operation, using both a 10-MHz distributed feedback laser and a 100-kHz external cavity laser as downstream laser sources. |
Year | DOI | Venue |
---|---|---|
2017 | 10.1109/ACCESS.2017.2765336 | IEEE ACCESS |
Keywords | Field | DocType |
Optical fiber communication,optical fiber networks,OFDM modulation | Digital signal processing,Computer science,Computer network,Distributed feedback laser,Free spectral range,Multiplexing,Homodyne detection,Orthogonal frequency-division multiplexing,Local oscillator,Access network | Journal |
Volume | ISSN | Citations |
5 | 2169-3536 | 0 |
PageRank | References | Authors |
0.34 | 1 | 5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Guo-wei Lu | 1 | 6 | 4.83 |
Xun Guan | 2 | 0 | 1.35 |
Takahide Sakamoto | 3 | 21 | 14.30 |
Naokatsu Yamamoto | 4 | 10 | 14.73 |
Calvin C. K. Chan | 5 | 0 | 1.01 |