Prospects and Challenges of Photonic Switching in Data Centers and Computing Systems

Yoo, S. J. B.

doi:10.1109/jlt.2021.3136570

Cited by 58 publications

(9 citation statements)

References 153 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prospects and challenges of all-optical switching for intra-datacenter applications, replacing the entire electronic fat-tree topology with a flat optical layer [Fig. 14(c)], are discussed in [119]. The main challenges for optical switching within the datacenter are the high dynamism with which servers exchange information, which can be met with electronic-packet networks.…”

Section: Proceedings Of the Ieee 13mentioning

confidence: 99%

Optical Switching in Future Fiber-Optic Networks Utilizing Spectral and Spatial Degrees of Freedom

et al. 2022

View full text Add to dashboard Cite

Forthcoming capacity scaling requirements of optical networks and advances in optical fiber communications beyond the omnipresent single-mode fiber operating over the conventional band introduces new opportunities and challenges for exploiting the expanded spectral and spatial resources available for fiber-optic network designs. The spectral and spatial degrees of freedom introduce utilization tradeoffs that can be leveraged under different applications. After briefly reviewing the supporting network building elements (emerging fiber types, multiplexers, optical switches, and amplifiers), we consider networking scenarios such as intra/inter datacenter, terrestrial, undersea, and wireless 5G/6G hauling networks and identify the best utilization plan and key attributes that can be harnessed by the offered spectral and spatial degrees of freedom for each scenario and how optical switching can be employed therein for traffic management. Networks supporting these scenarios are Manuscript

show abstract

Section: Proceedings Of the Ieee 13mentioning

confidence: 99%

Optical Switching in Future Fiber-Optic Networks Utilizing Spectral and Spatial Degrees of Freedom

et al. 2022

View full text Add to dashboard Cite

show abstract

“…P HOTONIC integrated circuits (PICs), extensively explored in research, hold the potential for applications across diverse fields, such as high-speed transceivers in optical communications [1], integrated photonic switches in data centers and high-performance computing systems [2], and dense optical phased arrays for precise sensing and ranging [3]. Temperature plays a critical role in the performance and reliability of PICs [4], particularly within high-performance PICs that contain optical amplifiers, arrayed waveguide gratings, or lasers.…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensing Diode in InP-Based Photonic Integration Technology

Tian,

Bas,

Harmsen

et al. 2024

IEEE Photonics J.

View full text Add to dashboard Cite

The integration of temperature sensors directly onto photonic platforms facilitates the thermal management of advanced photonic integrated circuits. This paper presents monolithic temperature sensors on the indium-phosphide-based photonic integration technology. Two distinct sensors were developed using p-i-n diode junctions with different waveguide core layers, one composed of multiple quantum wells and the other of bulk indium gallium arsenide phosphide. Introducing these sensors to an indium-phosphide-based generic foundry platform required zero process modifications. Theoretical, simulation, and measurement results consistently reveal a linear relationship between the forward voltage of the sensors and temperature under constant current biasing. The measurement results highlight that the compact sensors with dimensions of 30 × 10 µm achieve the highest sensitivity of −2.1 mV/K. These sensors boast a simple structure, easy operation, straightforward temperature interpretation, and high compatibility with the foundry process. They present immunity to on-chip (stray) light, a critical feature when operating alongside integrated lasers. The results demonstrate the feasibility of local temperature measurement and monitoring of photonic integrated circuits.

show abstract

“…[ 7,8 ] Recent advances in comb‐driven optical interconnects and highly paralleled data‐center communications have been pushing the boundary of link capacities even further. [ 9,10 ] Therefore, it is essential to expand the optical bandwidth of PBSs to enable the polarization management for a substantial number of wavelength carriers in future optical communication systems. The polarization‐sensitive OCT collects the intensity and retardation information by probing the birefringent sample with broadband polarized light.…”

Section: Introductionmentioning

confidence: 99%

Meta‐Structured Silicon Nanophotonic Polarization Beam Splitter with an Optical Bandwidth of 415 nm

Qin

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

The polarization beam splitter (PBS) is a pivotal element in the polarization management of free‐space optical instruments and systems. Photonic integrated circuits for sensing, imaging, communications, and quantum‐information processing also have needs for monolithically integrated PBSs with an ultra‐broad optical bandwidth. In this paper, a novel silicon nanophotonic PBS inspired by the crystalline Glan–Thompson prism but implemented with silicon subwavelength‐grating (SWG) metamaterials is presented. Due to the tailored artificial anisotropy of SWGs, the meta‐prism functions like a thin‐film reflector or a waveguide crossing for different polarizations. Thus, the incident light can be steered with strong polarization selectivity and negligible wavelength dependence. Unlike conventional PBS designs, the routing of polarized light is enabled by the wavelength‐independent total internal reflection in anisotropy‐engineered effective media, thereby breaking the bandwidth limit. The device footprint is as small as ≈15 × 7 µm2. Low insertion losses of 0.6–1.7 dB and high extinction ratios of 20–30 dB are experimentally achieved spanning a record broad bandwidth of over 415 nm, ranging from 1.26 to 1.675 µm wavelength. These results represent, to the best of their knowledge, the most broadband integrated PBS ever demonstrated to date.

show abstract

Prospects and Challenges of Photonic Switching in Data Centers and Computing Systems

Cited by 58 publications

References 153 publications

Optical Switching in Future Fiber-Optic Networks Utilizing Spectral and Spatial Degrees of Freedom

Optical Switching in Future Fiber-Optic Networks Utilizing Spectral and Spatial Degrees of Freedom

Temperature Sensing Diode in InP-Based Photonic Integration Technology

Meta‐Structured Silicon Nanophotonic Polarization Beam Splitter with an Optical Bandwidth of 415 nm

Contact Info

Product

Resources

About