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Dual Parallel Multi-electrode Traveling Wave Mach-Zehnder Modulator for 200 Gb/s Intra-datacenter Optical Interconnects
摘要： We present a silicon photonic dual parallel multi-electrode Mach-Zehnder modulator (MEMZM) based transmitter targeting 200 Gb/s 4-level pulse amplitude modulation (PAM4) short reach transceivers. The MEMZMs have an average Vπ and electro-optic (EO) bandwidth of 5 V and 38 GHz, respectively. The transmitter is characterized versus receiver equalizer taps, received signal power, driving voltage swing, crosstalk voltage swing, bitrate, and reach. Results reveal that using only a 3-tap equalizer at the receiver, 100 Gb/s PAM4 net rate per lane can be achieved at a bit error rate (BER) below the KP4 forward error correction (KP4-FEC) threshold of 2.4 × 10?4. Moreover, up to 128 Gb/s can be received at a BER below the KP4-FEC threshold using only 2 Vpp and 1 Vpp driving the MEMZM segments. Then, both MEMZMs are driven simultaneously to assess the crosstalk impact on the BER performance at parallel operation. Driven by four binary signals, we demonstrate 200 Gb/s PAM4 transmission over up to 10 km of single mode fiber at a BER below the KP4-FEC threshold.
关键词： Optical interconnects,Fiber optics systems,silicon nanophotonics,Electro-optical systems
更新于2025-09-23 15:22:29
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[IEEE 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL) - Sozopol, Bulgaria (2019.9.6-2019.9.8)] 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL) - Active electro-optical system with dynamic spectral processing of optical radiation
摘要： The paper is devoted to the principles of constructing active electro-optical systems with dynamic spectral processing of optical radiation in order to enhance the contrast of search objects images. In active electro-optical systems with dynamic processing polychromatic probing radiation is formed using laser signals based on a priori information about the spectral characteristics of the object and the background. The spectrum of the probing radiation is formed in such a way that at the output of the electro-optical system a minimum response is formed for the radiation reflected from the background and the maximum response of the radiation reflected from the object's surface. A block diagram of the active electro-optical systems and results of mathematical modeling of the signal processing in it are given.
关键词： active electro-optical systems,dynamic spectral processing
更新于2025-09-19 17:13:59