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Optically matched vertical-cavity surface-emitting laser (VCSEL) with passivation

A vertical cavity surface emission, laser technology, applied in the direction of lasers, laser components, semiconductor lasers, etc.

Pending Publication Date: 2020-11-06
MELLANOX TECHNOLOGIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional VCSEL designs often fail to provide control over photon lifetime, signal bandwidth, bleed behavior, and overshoot control for operation as a high-speed, high-bandwidth VCSEL

Method used

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  • Optically matched vertical-cavity surface-emitting laser (VCSEL) with passivation
  • Optically matched vertical-cavity surface-emitting laser (VCSEL) with passivation
  • Optically matched vertical-cavity surface-emitting laser (VCSEL) with passivation

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Embodiment Construction

[0013] The present inventions now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the inventions are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout. As used herein, terms such as "top", "bottom", "front", etc. are used in the examples provided below for purposes of explanation in order to describe the relative positions of certain components or parts of components. Accordingly, by way of example, the term "top current spreading layer" may be used to describe a current spreading layer; however, depending on the orientation of the particular item being described, the current spreading layer may be on the top or bottom. As used herein, the term "about" ...

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Abstract

The invention provides an optically matched vertical-cavity surface-emitting laser (vcsel) with passivation. The VCSEL includes a mesa structure disposed on a substrate. The mesa structure has a firstreflector, a second reflector, and an active cavity material structure disposed between the first and second reflectors. The mesa structure defines an optical window through which the VCSEL is configured to emit light. The mesa structure further includes a passivation layer disposed at least within the optical window. The passivation layer is designed to seal the mesa structure to reduce the humidity sensitivity of the VCSEL and to protect the VCSEL from contaminants. The passivation layer also provides an improvement in overshoot control, broader modulation bandwidth, and faster pulsing of the VCSEL such that the VCSEL may provide a high speed, high bandwidth signal with controlled overshoot and dumping behavior.

Description

technical field [0001] Embodiments of the present invention generally relate to vertical-cavity surface-emitting lasers (VCSELs). Example embodiments relate generally to high speed, high bandwidth VCSELs with passivation. Background technique [0002] As data communication needs grow in volume and speed, fiber optics has become an increasingly popular means of communication. An emerging element of this approach for generating data streams for communication over optical fibers includes a VCSEL optically coupled to a single-mode fiber. However, conventional VCSEL designs often fail to provide control over photon lifetime, signal bandwidth, bleed behavior, and overshoot control for operation as a high-speed, high-bandwidth VCSEL. Contents of the invention [0003] Example embodiments of the present invention provide a high speed, high bandwidth VCSEL. For example, various embodiments provide VCSELs capable of data communication at rates of 50 gigabytes per second or higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/183H01S5/028
CPCH01S5/18347H01S5/18305H01S5/0282H01S2301/17H01S5/18313H01S5/18352H01S5/18341H01S5/0283H01S5/18394H01S5/18344H01S5/02257
Inventor 伊扎克·卡利法艾拉德·门托维奇
Owner MELLANOX TECHNOLOGIES LTD
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