Demonstration of a 2 × 800 Gb/s/wave Coherent Optical Engine Based on an InP Monolithic PIC

Porto, Stefano; Chitgarha, Mohammad Reza; Leung, Irene; Maher, Robert; Going, Ryan; Wolf, S.; Studenkov, P.; Zhang, Jiaming; Hodaei, Hossein; Frost, Thomas; Tsai, Huan-Shang; Buggaveeti, S.; Rashidinejad, Amir; Yekani, Amin; Nejad, Reza Mirzaei; Olmedo, Miguel Iglesias; Kerns, S.; Diniz, Júlio C. M.; Pavinski, Donald; Brigham, Robert H.; Foo, Ben; Al-Khateeb, Mohammad; Koenig, S.; Samra, P.; Missey, M.; Dominic, V.; Sun, Han; Sanders, Steve; Osenbach, J.W.; Corzine, S.; Evans, P.; Lal, V.; Ziari, M.

doi:10.1109/jlt.2021.3121284

Cited by 11 publications

(8 citation statements)

References 17 publications

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“…3) Vertical photonic integration: Indium Phosphide (InP) Photonic Integrated Circuit (PIC) technology is particularly suitable for the application we are envisioning [50]. A single, widely tunable laser is needed to supply light for high-speed coherent DSCM transmission, and it is also needed as a local oscillator for coherent detection.…”

Section: The Key Elements Of Software-configurable Optical Networkmentioning

confidence: 99%

“…It is designed for pluggables comprising an InP PIC with matching RF ASIC implemented in Silicon Germanium (SiGe) and a CMOS control ASIC. The implementation is based on an earlier reported PIC, ASIC, and optical packaging platform, optimized for small form factor pluggable operation [50], [52]. The PIC resides in a single multilayer ceramic gold box, and its temperature is maintained by a TEC for good laser performance.…”

Section: A Transmitter-receiver Optical Sub-assembly (Trosa)mentioning

confidence: 99%

“…Two technologies, SiPh and InP are available for the implementation of PICs. Of these, InP is the only one that supports the integration of passive components, such as waveguides and splitters, with active photonic devices, such as tunable lasers, IQ Mach-Zehnder Modulator (IQ-MZM), and PIN detectors [50], [54], [55]. The ability to monolithically integrate lasers reduces the number of critical signal interfaces, simplifies packaging, and reduces the physical volume of the end product.…”

Section: Optimized Optics For High-capacity and High Volume Manufactu...mentioning

confidence: 99%

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Digital Subcarrier Multiplexing: Enabling Software-Configurable Optical Networks

Welch

Napoli

Bäck³

et al. 2023

J. Lightwave Technol.

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The various topologies, traffic patterns and cost targets of optical networks have prevented the deployment of endto-end solutions across multi-domains, and the optimization of the network as a whole. The consequent limitations in flexibility, scalability, and adaptability of optical networks will become increasingly important with new applications, such as 5G/6G. Coherent transceivers based on digital subcarrier multiplexing (DSCM) are proposed to address these current constraints. In particular, DSCM allows (i) the design of high-capacity pointto-point (P2P) and -multipoint (P2MP) optical networks; (ii) simplified aggregation with passive optics; and (iii) connections between low-and high-speed transceivers. Furthermore, DSCMbased networks reduce the number of opto-electro-opto stages, halve the number of bookended transceivers, and provide a better match for existing hub-and-spoke (H&S) traffic patterns in fast-growing and dynamic access/metro segments. A DSCMbased transceiver will pave the way for the deployment of nextgeneration flexible, adaptable, and scalable software-configurable optical networks.Key steps and elements to realize this solution are laid out, and promising applications outlined. The first real-time experimental results of coherent P2MP transceivers are presented.

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Section: The Key Elements Of Software-configurable Optical Networkmentioning

confidence: 99%

Section: A Transmitter-receiver Optical Sub-assembly (Trosa)mentioning

confidence: 99%

Section: Optimized Optics For High-capacity and High Volume Manufactu...mentioning

confidence: 99%

See 1 more Smart Citation

Digital Subcarrier Multiplexing: Enabling Software-Configurable Optical Networks

Welch

Napoli

Bäck³

et al. 2023

J. Lightwave Technol.

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“…Conventionally, coherent optical receivers have been implemented by waveguide-based photonic integrated circuits (PICs) on various platforms, including silica [17], indium phosphide (InP) [18][19][20], and silicon (Si) [21][22][23][24]. Among them, the silicon photonic platform offers the highest optical confinement.…”

mentioning

confidence: 99%

“…Conventionally, coherent optical receivers have been implemented by waveguide-based photonic integrated circuits (PICs) on various platforms, including silica, indium phosphide (InP), − and silicon (Si). − Among them, the silicon photonic platform offers the highest optical confinement. Nevertheless, a single-channel single-polarization coherent receiver typically occupies a millimeter-square-scale footprint to contain a complicated PIC with an optical coupler (either a grating coupler or an edge coupler with a spot-size converter), a 90° optical hybrid, four photodetectors (PDs), and optical waveguides to connect them.…”

mentioning

confidence: 99%

Ultra-Broadband Surface-Normal Coherent Optical Receiver with Nanometallic Polarizers

et al. 2022

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A coherent receiver that can demodulate high-speed in-phase and quadrature signals of light is an essential component for optical communication, interconnects, imaging, and computing.Conventional waveguide-based coherent receivers, however, exhibit large footprints, difficulty in coupling a large number of spatial channels efficiently, and limited operating bandwidth imposed by the waveguide-based optical hybrid. Here, we present a surface-normal coherent receiver with nanometallic-grating-based polarizers integrated directly on top of photodetectors without the need for an optical hybrid circuit. Using a fabricated device with the active section occupying a 70-μm-

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Differential phase-diversity electrooptic modulator for cancellation of fiber dispersion and laser noise

Ordouie,

Jiang,

Zhou

et al. 2023

Nat Commun

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Bandwidth and noise are fundamental considerations in all communication and signal processing systems. The group-velocity dispersion of optical fibers creates nulls in their frequency response, limiting the bandwidth and hence the temporal response of communication and signal processing systems. Intensity noise is often the dominant optical noise source for semiconductor lasers in data communication. In this paper, we propose and demonstrate a class of electrooptic modulators that is capable of mitigating both of these problems. The modulator, fabricated in thin-film lithium niobate, simultaneously achieves phase diversity and differential operations. The former compensates for the fiber’s dispersion penalty, while the latter overcomes intensity noise and other common mode fluctuations. Applications of the so-called four-phase electrooptic modulator in time-stretch data acquisition and in optical communication are demonstrated.

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Demonstration of a 2 × 800 Gb/s/wave Coherent Optical Engine Based on an InP Monolithic PIC

Cited by 11 publications

References 17 publications

Digital Subcarrier Multiplexing: Enabling Software-Configurable Optical Networks

Digital Subcarrier Multiplexing: Enabling Software-Configurable Optical Networks

Ultra-Broadband Surface-Normal Coherent Optical Receiver with Nanometallic Polarizers

Differential phase-diversity electrooptic modulator for cancellation of fiber dispersion and laser noise

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