Abstract
We demonstrate the generation of error-free binary-phase-shift-keyed (BPSK) data at 5 Gb/s using a silicon microring modulator. The microring-modulated BPSK signal is propagated at fiber lengths up to 80 km, maintaining error-free performance, while demonstrating resilience to chromatic dispersion. Bit-error-rate measurements and eye diagrams show near equivalent performance of a microring-based BPSK modulator as compared to commercial LiNbO₃ phase modulators.
Highlights
As optical communications continues to penetrate deeper into the infrastructure of information technology the need for smaller, cheaper, and more energy efficient optical components has become imperative
We demonstrate the generation of error-free binary-phase-shiftkeyed (BPSK) data at 5 Gb/s using a silicon microring modulator
The microring-modulated BPSK signal is propagated at fiber lengths up to 80 km, maintaining error-free performance, while demonstrating resilience to chromatic dispersion
Summary
As optical communications continues to penetrate deeper into the infrastructure of information technology the need for smaller, cheaper, and more energy efficient optical components has become imperative. While the performance metrics of these long-reach optical links are comparatively much smaller than their long-haul counterparts, the much larger breadth of access networks requires many more links, resulting in an overall increased number of optical components. At this long-reach scale, the focus on optical components shifts from performance to cost. We demonstrate the first error-free generation and propagation of binary-phase-shift-keyed (BPSK) data for long-reach applications using a silicon microring modulator. The BPSK modulation format has several beneficial characteristics over OOK: a sensitivity improvement, lower susceptibility to fiber non-linearities, and reduced crosstalk in WDM systems [11] With this demonstration we are effectively combining the benefits of silicon microring modulators and the BPSK format. Bit-error-rate (BER) measurements and eye patterns are used to study the evolution of transmitted microring-generated BPSK and verify its potential for use in long-reach applications
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