Cascaded Mach–Zehnder Architectures for Photonic Integrated Delay Lines Article Swipe

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Bandwidth (computing) Photonics True time delay Resonator Astronomical interferometer Optical ring resonators Group delay and phase delay Mach–Zehnder interferometer Transmission delay Computer science Physics Optics Optoelectronics Electronic engineering Transmission (telecommunications) Interferometry Telecommunications Engineering Antenna (radio) Phased array

Abi Waqas , Daniele Melati , Andrea Melloni ·

YOU? · · 2018 · Open Access · · DOI: https://doi.org/10.1109/lpt.2018.2865703 · OA: W2887320422

A continuously tunable integrated optical delay line architecture with large bandwidth and bandwidth-delay product is proposed and demonstrated. The non-resonant delay line is based on cascaded Mach-Zehnder interferometers with tunable couplers. The device is operated with a single control signal and outperforms the common ring-resonator-based delay lines in terms of bandwidth-delay product. A device with a delay tuning range of 124 ps is experimentally demonstrated over a transmission bandwidth of 4.5 GHz.