We theoretically and experimentally demonstrate a ring-assisted Mach–Zehnder interferometer modulator for intensity and phase modulation, leveraging both Mach–Zehnder modulator and single microring modulator. Differential drive of two microring modulators nested… Click to show full abstract
We theoretically and experimentally demonstrate a ring-assisted Mach–Zehnder interferometer modulator for intensity and phase modulation, leveraging both Mach–Zehnder modulator and single microring modulator. Differential drive of two microring modulators nested in a Mach–Zehnder interferometer offers several advantages for both intensity modulation and phase modulation. We first present a complete theoretical study of this differential ring modulator, including the operation principles, high-speed characteristics, system performance, and energy consumption. We then experimentally verify that this differential ring modulator provides low-chirp, low drive voltage, and large extinction ratio for intensity modulation, and low-chirp, low drive voltage, and drive-voltage insensitivity for phase modulation.
               
Click one of the above tabs to view related content.