Ultra-Compact 200G QSFP Transceiver Chiplet
A high-density silicon photonic transmitter chiplet that combines mode-division-multiplexing (MDM) and wavelength-division-multiplexing (WDM) to achieve 200G capacity within a minimal physical footprint.
Concept
A specialized silicon photonic chiplet designed for integration into 200G Quad Small Form-factor Pluggable (QSFP) transceivers. The product utilizes add-drop micro-ring modulators to handle both electro-optic modulation and wavelength multiplexing simultaneously, while employing a dual-mode grating coupler to interface efficiently with MDM optical fibers. This allows for a massive increase in data throughput (up to 4 x 56 Gbps) without increasing the physical size of the transceiver module.
Why now
Recent advancements in silicon photonics have enabled the integration of both MDM and WDM on a single chiplet with a footprint as small as 1.65 mm² [0]. The demonstration of high chip-to-fiber coupling efficiency and high signaling rates (56 Gbps per channel) makes it commercially viable to replace bulkier traditional transceivers with these high-density chiplets [0].
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Who benefits
- Data Center Network Operatorsorganization
They face physical space constraints in server racks; a more compact, higher-capacity transceiver allows for greater throughput per rack unit.
- Data Center Operatorsorganization
Allows for higher bandwidth density per rack unit, reducing the physical footprint of networking infrastructure while increasing total throughput.
Enables the production of more competitive, compact 200G QSFP modules using a standardized chiplet architecture.
- Optical Module Manufacturerscompany
They can offer a more competitive, smaller-footprint 200G product that is easier to integrate into existing QSFP standards.
Research it builds on
- Chinese Optics Letters2026 · 1438 citationsAll ideas from this paper →
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