14 June 2019 Width-tunable optical pulse generator based on the polarization-sensitive feature of LiNbO3 crystal in Mach–Zehnder modulator
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Abstract
A width-tunable optical pulses generation scheme by using a single Mach–Zehnder modulator (MZM) based on polarization-sensitive feature of LiNbO3 crystal is proposed and experimentally demonstrated. In the proposed system, a continuous-wave light is sent into MZM via a polarization controller (PC), and interference in a polarization beam splitter after passing through another PC. Experimental results show that the full-width at half-maximum of pulses (10 GHz) can be tuned continuously from 20.39 to 53 ps by adjusting the DC bias voltage of MZM and PCs. A 40 to 10  Gbit  /  s optical time division multiplexing (OTDM) signal demultiplexing experiment has been demonstrated using the time window provided by the proposed scheme. And the results show that the proposed width-tunable optical pulses generation scheme can be used in OTDM demultiplexing.
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$25.00 © 2019 SPIE
Jian Sun, Muguang Wang, Yu Tang, Beilei Wu, Jing Zhang, Tangjun Li, and Yanchao Shi "Width-tunable optical pulse generator based on the polarization-sensitive feature of LiNbO3 crystal in Mach–Zehnder modulator," Optical Engineering 58(6), 063104 (14 June 2019). https://doi.org/10.1117/1.OE.58.6.063104
Received: 6 February 2019; Accepted: 29 May 2019; Published: 14 June 2019
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KEYWORDS
Picosecond phenomena

Modulators

Polarization

Signal attenuation

Crystals

Modulation

Pulse generators

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