Vertical-cavity surface-emitting laser with high modulation speed
US10396527B2 · kind B2 · utility
7Cited by
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16Claims
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Key dates
| Filing date | Jun 14, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34366
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vertical-cavity surface-emitting laser (VSCEL) and method for producing a VCSEL are described, the VCSEL including an undercut active region. The active region of the VCSEL is undercut relative to current-spreading layers of the VCSEL, such that a width of a tunnel junction of the VCSEL overgrown by a current spreading layer is less than a width of an active region of the VCSEL, and a width of the active region of the VCSEL is less than a width of the overgrown current-spreading layer, such that the VCSEL including the undercut active region is configured to transmit data at speeds greater than 25 gigabits/second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.