期刊
OPTICS LETTERS
卷 46, 期 3, 页码 460-463出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.408614
关键词
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类别
资金
- David and Lucile Packard Foundation [2012-38222]
- National Science Foundation [1144083]
The study demonstrates a non-reciprocal element made up of a pair of microring modulators and a microring phase shifter in an active silicon photonic process, achieving an on-chip isolator. Isolation of up to 13 dB was achieved with an insertion loss of 18 dB. The design, along with increased modulation efficiency, could potentially make modulator-based isolators a standard 'black-box' component in integrated photonics CMOS foundry platform component libraries.
Optical isolators, while commonplace in bulk and fiber optical systems, remain a key missing component in integrated photonics. Isolation using magneto-optic materials has been difficult to integrate into complementary metal-oxide- semiconductor (CMOS) fabrication platforms, motivating the use of other paths to effective non-reciprocity such as temporal modulation. We demonstrate a non-reciprocal element comprising a pair of microring modulators and a microring phase shifter in an active silicon photonic process, which, in combination with standard bandpass filters, yields an isolator on-chip. Isolation up to 13 dB is measured with a 3 dB bandwidth of 2 GHz and insertion loss of 18 dB. We also show transmission of a 4 Gbps optical data signal through the isolator while retaining a wide-open eye diagram. This compact design, in combination with increased modulation efficiency, could enable modulator-based isolators to become a standard 'black-box' component in integrated photonics CMOS foundry platform component libraries. (C) 2021 Optical Society of America
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