Photonics Research, 2020, 8 (6): 06001059, Published Online: Jun. 1, 2020  

Novel spectral-shaping building block: a narrowband Mach–Zehnder interferometer

Author Affiliations
1 Department of Electrical & Computer Engineering, University of California, San Diego, California 92093, USA
2 King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
We present an experimental demonstration of notch filters with arbitrary center wavelengths capable of tunable analog output power values varying between full extinction of 15 and 0 dB. Each filter is composed of highly modular apodized four-port Bragg add/drop filters to reduce the crosstalk between concatenated devices. The constructed photonic integrated circuit experimentally demonstrates spectra shaping using four independent notch filters. Each notch filter supports a bandwidth of 2 nm and is shown to be suitable for realization of programmable photonic integrated circuits.

Jordan A. Davis, Ang Li, Naif Alshamrani, Yeshaiahu Fainman. Novel spectral-shaping building block: a narrowband Mach–Zehnder interferometer[J]. Photonics Research, 2020, 8(6): 06001059.

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