[1] International Telecommunication Union. 40-gigabit-capable passive optical networks (NGPON2): physical media dependent (PMD) layer specification: G989.2[S]. [S.l.: s.n.](2017).

[2] Armstrong J. OFDM for optical communications[J]. Journal of Lightwave Technology, 27, 189-204(2009).

[3] Shieh W, Yi X W, Ma Y R et al. Coherent optical OFDM: has its time come?[Invited][J]. Journal of Optical Networking, 7, 234-255(2008). http://www.opticsinfobase.org/abstract.cfm?uri=JON-7-3-234

[4] Shieh W, Bao H, Tang Y. Coherent optical OFDM: theory and design[J]. Optics Express, 16, 841-859(2008). http://www.opticsinfobase.org/abstract.cfm?id=148806

[5] Yang Q, Yu S H. Tb/sultralong haul transmission of coherent optical OFDM[J]. Chinese Science Bulletin, 59, 1497-1507(2014).

[6] Li B, Yu J J, He J et al. Estimation and compensation of sampling clock frequency offset in coherent optical OFDM systems with a pilot-aided method[J]. Acta Photonica Sinica, 44, 0106003(2015).

[7] Chen R R, Kuang C X, Ma J J et al. Algorithm of coherent optical orthogonal frequency division multiplexing-passive optical network system based on optical-comb wave[J]. Acta Optica Sinica, 37, 0706003(2017).

[8] Tang Y J, Dong Y J, Ren H L et al. Phase noise compensation algorithm based on Kalman filtering in time and frequency domains for CO-OFDM system[J]. Acta Optica Sinica, 37, 0906002(2017).

[9] Ma J J, Sun T F, Li Z X et al. Blind phase noise compensation algorithm for CO-OFDM system based on projection histogram[J]. Acta Optica Sinica, 38, 0406001(2018).

[10] Nakamura M, Kamio Y. 30-Gbps (5-Gsymbol/s) 64-QAM self-homodyne transmission over 60-km SSMF using phase-noise cancelling technique and ISI-suppression based on electronic digital processing. [C]∥Optical Fiber Communication Conference 2009, March 22-26, 2009, San Diego, California, USA. Washington, D.C.: OSA, OWG4(2009).

[11] Shahpari A, Luís R S, Reis J D et al. Fully coherent self-homodyne bi-directional enhanced performance PON. [C]∥Optical Fiber Communication Conference 2014, March 9-13, 2014, San Francisco, California, USA. Washington, D.C.: OSA, W4G, 1(2014).

[12] Mao M Z, Chen R R, Kuang C X et al. Performance analyses on OFDM-PON in coherent detection schemes[J]. WSEAS Transactions on Communications, 15, 37-47(2016). http://www.wseas.us/journal/pdf/communications/2016/a105804-696.pdf

[13] Wu D S, Slavik R, Marra G et al. Direct selection and amplification of individual narrowly spaced optical comb modes via injection locking: design and characterization[J]. Journal of Lightwave Technology, 31, 2287-2295(2013). http://ieeexplore.ieee.org/document/6515623/

[14] Liu Z X, Wu D S, Richardson D J et al. Homodyne OFDM using simple optical carrier recovery. [C]∥ Optical Fiber Communication Conference 2014, March 9-13, 2014, San Francisco, California, USA. Washington, D.C.: OSA, W4K, 3(2014).

[15] Wang Y X, Kasai K, Yoshida M et al. 320 Gbit/s, 20 Gsymbol/s 256 QAM coherent transmission over 160 km by using injection-locked local oscillator[J]. Optics Express, 24, 22088-22096(2016). http://www.ncbi.nlm.nih.gov/pubmed/27661943

[16] Uvin S, Keyvaninia S, Lelarge F et al. Narrow line width frequency comb source based on an injection-locked III-V-on-silicon mode-locked laser[J]. Optics Express, 24, 5277-5286(2016). http://www.ncbi.nlm.nih.gov/pubmed/29092352

[17] Jignesh J, Corcoran B, Schröder J et al. Polarization independent optical injection locking for carrier recovery in optical communication systems[J]. Optics Express, 25, 21216-21228(2017). http://europepmc.org/abstract/MED/29041527

[18] Holmes J F, Rask B J. Optimum optical local-oscillator power levels for coherent detection with photodiodes[J]. Applied Optics, 34, 927-933(1995). http://europepmc.org/abstract/MED/21037611