Chip-based Brillouin processing for carrier recovery in self-coherent optical communications

Elias Giacoumidis, Amol Choudhary, Eric Magi, David Marpaung, Khu Vu, Pan Ma, Duk-Yong Choi, Steve Madden, Bill Corcoran, Mark Pelusi, Benjamin J. Eggleton

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Modern fiber-optic coherent communications employ advanced, spectrally efficient modulation formats that require sophisticated narrow-linewidth local oscillators (LOs) and complex digital signal processing (DSP). Self-coherent optical orthogonal frequency-division multiplexing (self-CO-OFDM) is a modern technology that retrieves the frequency and phase information from the extracted carrier without employing a LO or additional DSP. However, a wide carrier guard is typically required to easily filter out the optical carrier at the receiver, thus discarding many OFDM middle subcarriers that limit the system data rate. Here, we establish an optical technique for carrier recovery, harnessing large-gain stimulated Brillouin scattering (SBS) on a photonic chip for up to 116.82 Gbit · s−1 self-CO-OFDM signals, without requiring a separate LO. The narrow SBS linewidth allows for a record-breaking small carrier guard band of ∼265 MHz in self-CO-OFDM, resulting in higher capacity than benchmark self-coherent multi-carrier schemes. Chip-based SBS-self-coherent technology reveals comparable performance to state-of-the-art coherent optical receivers while relaxing the requirements of the DSP. In contrast to on-fiber SBS processing, our solution provides phase and polarization stability. Our demonstration develops a low-noise and frequency-tracking filter that synchronously regenerates a low-power narrowband optical tone, which could relax the requirements on very-high-order modulation signaling for future communication networks. The proposed hybrid carrier filtering-and-regeneration technique could be useful in long-baseline interferometry for precision optical timing or reconstructing a reference tone for quantum-state measurements.

Original languageEnglish
Pages (from-to)1191-1199
Number of pages9
JournalOptica
Volume5
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

Cite this

Giacoumidis, E., Choudhary, A., Magi, E., Marpaung, D., Vu, K., Ma, P., ... Eggleton, B. J. (2018). Chip-based Brillouin processing for carrier recovery in self-coherent optical communications. Optica, 5(10), 1191-1199. https://doi.org/10.1364/OPTICA.5.001191
Giacoumidis, Elias ; Choudhary, Amol ; Magi, Eric ; Marpaung, David ; Vu, Khu ; Ma, Pan ; Choi, Duk-Yong ; Madden, Steve ; Corcoran, Bill ; Pelusi, Mark ; Eggleton, Benjamin J. / Chip-based Brillouin processing for carrier recovery in self-coherent optical communications. In: Optica. 2018 ; Vol. 5, No. 10. pp. 1191-1199.
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Giacoumidis, E, Choudhary, A, Magi, E, Marpaung, D, Vu, K, Ma, P, Choi, D-Y, Madden, S, Corcoran, B, Pelusi, M & Eggleton, BJ 2018, 'Chip-based Brillouin processing for carrier recovery in self-coherent optical communications', Optica, vol. 5, no. 10, pp. 1191-1199. https://doi.org/10.1364/OPTICA.5.001191

Chip-based Brillouin processing for carrier recovery in self-coherent optical communications. / Giacoumidis, Elias; Choudhary, Amol; Magi, Eric; Marpaung, David; Vu, Khu; Ma, Pan; Choi, Duk-Yong; Madden, Steve; Corcoran, Bill; Pelusi, Mark; Eggleton, Benjamin J.

In: Optica, Vol. 5, No. 10, 01.10.2018, p. 1191-1199.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Giacoumidis, Elias

AU - Choudhary, Amol

AU - Magi, Eric

AU - Marpaung, David

AU - Vu, Khu

AU - Ma, Pan

AU - Choi, Duk-Yong

AU - Madden, Steve

AU - Corcoran, Bill

AU - Pelusi, Mark

AU - Eggleton, Benjamin J.

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Giacoumidis E, Choudhary A, Magi E, Marpaung D, Vu K, Ma P et al. Chip-based Brillouin processing for carrier recovery in self-coherent optical communications. Optica. 2018 Oct 1;5(10):1191-1199. https://doi.org/10.1364/OPTICA.5.001191