Monolithic thin film lithium niobate electro-optic modulator with over 110 GHz bandwidth
Fan Yang, Xiansong Fang, Xinyu Chen, Lixin Zhu, Fan Zhang, Zhangyuan Chen, Yanping Li
Abstract
High-performance thin film lithium niobate (LN) electro-optic modulators with low cost are in demand. Based on photolithography and wet etching, we experimentally demonstrate a thin film LN Mach-Zehnder modulator with a 3 dB bandwidth exceeding 110 GHz, which shows the potential of boosting the throughput and reducing cost. The fabricated modulator also exhibits a comparable low half-wave voltage-length product of 2.37 V cm, a high extinction ratio of >23 dB, and the propagation loss of optical waveguides of 0.2 dB=cm. Besides, six-level pulse amplitude modulation up to 250 Gb=s is successfully achieved.
Topics & Concepts
Lithium niobateMaterials scienceExtinction ratioOpticsPhotolithographyElectro-optic modulatorThin filmOptoelectronicsInsertion lossOptical modulatorBandwidth (computing)Phase modulationTelecommunicationsWavelengthPhysicsNanotechnologyComputer sciencePhase noisePhotonic and Optical DevicesPhotorefractive and Nonlinear OpticsAdvanced Fiber Laser Technologies