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VTT's well-proven 3 μm SOI (Silicon Over Insulator) photonic integration platform is particularly suitable for passive optical functionalities such as Multiplexers, De-Multiplexers, Power Splitters, Delay Lines, Mach-Zehnder Interferometers (MZI), also for active operations such as phase tuning through Thermo-optic Switches and optical power monitoring or high-speed detection with integrated Ge Photo-Detectors (Ge-PD) etc. In combination with integrated up-reflecting mirrors and solder coated cavities it's enabling heterogeneous integration of III-V active devices; both Wafer Level Packaging (WLP) and E/O Wafer Level Tests can be fully exploited, scaling up in volume manufacturing while dramatically reducing assembly costs. Here heterogeneous integration of 40 Vertical Cavity Surface Emitting Lasers (VCSELs) and a SOI 40:1 multiplexer Photonic Integrated Circuit (PIC) is exploited with flip-chip techniques, coupling VCSEL emitting spots on top of respective up-reflective mirrors. VCSELs can be directly modulated up to 50 Gb/s reaching a 2 T/ls full transmission capacity. Additional 40 linear VCSEL drivers are flip-chip bonded onto a suitable Land Grid Array (LGA) interposer designed to provide interconnection and thermal decoupling capabilities to the Si-PIC, realizing a very compact, thermally efficient packaging solution. The exit waveguide from the PIC is also terminated with an up-reflective mirror and furthermore coupled with a 90 deg. tilting fiber optic pigtail designed to minimize the form-factor impact, improving mechanical reliability of the overall transmitter module.
|Title of host publication||2020 22nd International Conference on Transparent Optical Networks, ICTON 2020|
|Publisher||IEEE Institute of Electrical and Electronic Engineers|
|Number of pages||5|
|Publication status||Published - 2020|
|MoE publication type||A4 Article in a conference publication|
|Event||22nd International Conference on Transparent Optical Networks, ICTON 2020 - Bari, Italy|
Duration: 19 Jul 2020 → 23 Jul 2020
|Series||International Conference on Transparent Optical Networks|
|Conference||22nd International Conference on Transparent Optical Networks, ICTON 2020|
|Period||19/07/20 → 23/07/20|
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