High Speed and High Temperature Operation of VCSELs

Westbergh, Petter; Gustavsson, Johan S.; Larsson, Anders

doi:10.1364/ofc.2015.m2d.5

Cited by 7 publications

(2 citation statements)

References 11 publications

(12 reference statements)

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“…The main goal was to extend the agreement from room temperature to higher temperatures, up to 110 • C, which is of the highest importance in applications like miniaturized atomic Cs-clocks [12,13] or datacenters [2,14]. As a matter of fact, many hyperscale datacenter operators need to adopt high-speed connections to handle data traffic in environments reaching temperatures of 85 • C [15].…”

Section: Introductionmentioning

confidence: 99%

Reduced Dimensionality Multiphysics Model for Efficient VCSEL Optimization

et al. 2021

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The ICT scene is dominated by short-range intra-datacenter interconnects and networking, requiring high speed and stable operations at high temperatures. GaAs/AlGaAs vertical-cavity surface-emitting lasers (VCSELs) emitting at 850–980 nm have arisen as the main actors in this framework. Starting from our in-house 3D fully comprehensive VCSEL solver VENUS, in this work we present the possibility of downscaling the dimensionality of the simulation, ending up with a multiphysics 1D solver (D1ANA), which is shown to be capable of reproducing the experimental data very well. D1ANA is then extensively applied to optimize high-temperature operation, by modifying cavity detuning and distributed Bragg’s reflector lengths.

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Section: Introductionmentioning

confidence: 99%

Reduced Dimensionality Multiphysics Model for Efficient VCSEL Optimization

et al. 2021

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“…To reduce the traffic time and improve the transmission quality of the data stream, the optical transceiver persistently advanced its maximal allowable data rate over past decade 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 . For rapid evolution of data center, the specification of optical transceivers has been updated to 400 Gbps 17 18 19 20 , and the multimode vertical-cavity-surface-emitting-lasers (VCSELs) at 850 nm with compact structure and high modulation bandwidth have emerged for practical applications 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 . The 850-nm multimode VCSELs with intriguing features including cost-effectiveness and low-power consumption, which have been proven to be a reliable key component in low-cost multimode fiber based optic interconnects for data center applications 36 .…”

mentioning

confidence: 99%

Efficient Heat Dissipation of Uncooled 400-Gbps (16×25-Gbps) Optical Transceiver Employing Multimode VCSEL and PD Arrays

Shih

Chieh

Wang

et al. 2017

Sci Rep

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An effective heat dissipation of uncooled 400-Gbps (16×25-Gbps) form-factor pluggable (CDFP) optical transceiver module employing chip-on-board multimode 25-Gbps vertical-surface-emitting-laser (VCSEL) and 25-Gbps photodiode (PD) arrays mounted on a brass metal core embedded within a printed circuit board (PCB) is proposed and demonstrated. This new scheme of the hollow PCB filling with thermally-dissipated brass metal core was simulated and used for high temperature and long term stability operation of the proposed 400-Gbps CDFP transceiver. During one-hour testing, a red-shift of central wavelength by 0.4-nm corresponding temperature increment of 6.7 °C was observed with the brass core assisted cooler module. Such a temperature change was significantly lower than that of 28.3 °C for the optical transceiver driven with conventional circuit board. After 100-m distance transmission over a multimode fiber (OM4), the 400-Gbps CDFP transceiver exhibited dispersion penalty of 2.6-dB, power budget of ≧ 3-dB, link loss of ≦ 0.63-dB, mask margin of 20%, and bit error rate (BER) of <10−12 with maintained stability more than one hour. The developed 400-Gbps CDFP transceiver module employing low-power consumption VCSEL and PD arrays, effective coupling lens arrays, and well thermal-dissipation brass metal core is suitable for use in the low-cost and high-performance data center applications.

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