1. Silicon Photonic Four-Channel Optical Add-Drop Multiplexer Enabled by Subwavelength Grating Waveguides
- Author
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Behnam Naghdi and Lawrence R. Chen
- Subjects
lcsh:Applied optics. Photonics ,Materials science ,Silicon photonics ,add-drop multiplexers ,02 engineering and technology ,Grating ,01 natural sciences ,Multiplexing ,Multiplexer ,010309 optics ,020210 optoelectronics & photonics ,Band-pass filter ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,lcsh:QC350-467 ,Hardware_ARITHMETICANDLOGICSTRUCTURES ,Electrical and Electronic Engineering ,Optical add-drop multiplexer ,business.industry ,Optical interconnect ,lcsh:TA1501-1820 ,Atomic and Molecular Physics, and Optics ,subwavelength structures ,Interferometry ,contra-directional couplers ,Optoelectronics ,business ,lcsh:Optics. Light - Abstract
Wavelength-division multiplexing over optical links provides an effective solution for the bandwidth challenge of off-chip and on-chip communications. We demonstrate a compact silicon photonic four-channel optical add-drop multiplexer enabled by subwavelength-grating-based contradirectional couplers. Passbands of the device show on-chip insertion losses below 1.8 dB with wide 3 dB bandwidth of ~6.7 nm suitable for coarse wavelength-division Multiplexing in short-reach optical interconnect applications. Transmission of 10 Gb/s data stream through different channels of the multiplexer results in negligible power penalties, whereas interferometric crosstalk-induced power penalties are below 2.8 dB.
- Published
- 2018
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