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Generation of O-band PAM-4 signal using a silicon modulator driven by two binary sequences
C2N CNRS, France.
University of Rennes CNRS, France.
C2N CNRS, France.
STMicroelectronics, France.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Silicon photonics is a promising solution for next generation of short-range optical communication systems. Silicon modulators have driven an important research activity over the past years, and many transmission links using on-off keying modulation format (OOK) were successfully demonstrated with a large diversity of modulator structures. In order to keep up with the demand of increasing bitrates for limited bandwidths in Datacom applications, higher modulation formats are explored, such as quadrature phase shift keying (QPSK) or 4-level pulse amplitude modulation (PAM-4). However, driving the modulators to generate PAM-4 signals commonly require expensive and power-hungry electronic devices such as digital-to-analog converters (DACs) for pulse-shaping and digital signal processors (DSP) for nonlinearity compensation. Lastly, new solutions were studied to overcome this issue, including new driving methods based on the use of two different input binary sequences applied directly on the modulator. While most of the reported works are focused on the C-band of communication, the O-band can present a definitive advantage due to the low dispersion of standard single-mode (SSMF) fiber. For those reasons, we demonstrate the generation of a 10-Gbaud DAC-less PAM-4 signal in the O-band using a depletion-based silicon traveling wave Mach-Zehnder modulator (TWMZM). An open eye diagram was obtained, and a bit error rate (BER) of 3.8×10 -3 was measured for a received optical power of about-6 dBm.

sted, utgiver, år, opplag, sider
SPIE , 2019.
Emneord [en]
Mach Zehnder modulator, Modulator, O-band, PAM-4, Silicon photonics, Binary sequences, Bit error rate, Digital devices, Digital signal processors, Digital to analog conversion, Light modulation, Modulators, Optical communication, Photonic devices, Pulse amplitude modulation, Pulse shaping, Quadrature phase shift keying, Datacom applications, Digital signal processors (DSP), Non-linearity compensation, On-off keying modulations, Quadrature phaseshift keying (QPSK), Research activities, Silicon modulators, Light modulators
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Identifikatorer
URN: urn:nbn:se:ri:diva-38916DOI: 10.1117/12.2507430Scopus ID: 2-s2.0-85065438112ISBN: 9781510624887 (tryckt)OAI: oai:DiVA.org:ri-38916DiVA, id: diva2:1321939
Konferanse
Silicon Photonics XIV 2019, 4 February 2019 through 6 February 2019
Merknad

Funding details: H2020-ICT-27-2015-688516; Funding text 1: This work was supported by the European project Cosmicc (H2020-ICT-27-2015-688516).

Tilgjengelig fra: 2019-06-10 Laget: 2019-06-10 Sist oppdatert: 2019-06-13bibliografisk kontrollert

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