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Crosstalk reduction in bidirectional optoelectronic devices

A technology of optoelectronics and equipment, applied in the field of bidirectional optoelectronic transceivers, which can solve the problems of photodetector sensitivity degradation

Active Publication Date: 2016-05-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensitivity of a photodetector is generally degraded in the presence of an input electrical signal applied to a light source, or the resulting output optical signal, relative to its sensitivity in the absence of an input electrical signal or an output optical signal

Method used

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  • Crosstalk reduction in bidirectional optoelectronic devices
  • Crosstalk reduction in bidirectional optoelectronic devices
  • Crosstalk reduction in bidirectional optoelectronic devices

Examples

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Embodiment Construction

[0039] Electrical crosstalk in multi-channel or bidirectional optoelectronic devices can arise through many mechanisms or pathways involving photodetectors, light sources, drive circuits for light sources, or amplification or filtering circuits for photodetectors. This electrical crosstalk is often due to capacitive or inductive coupling between two or more of those components. Optical crosstalk in multi-channel or bidirectional optoelectronic devices can occur through many mechanisms or pathways involving photodetectors, light sources, waveguides, filters, optical splitters or combiners, optical taps, or other optical components. This optical crosstalk is often due to unwanted scattering, reflection or transmission of light between two or more of those components. Electrical or optical crosstalk generally becomes more severe as the size of multi-channel or bidirectional optoelectronic devices decreases. Regardless of the particular mechanism or combination of mechanisms resp...

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PUM

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Abstract

A bidirectional optoelectronic device includes a photodetector, a light source and a driving circuit for the light source. The light source has first and second electrical leads for receiving an input electrical signal, and the driver circuit may be arranged to apply first and second portions of the input electrical signal to the first and second electrical leads, respectively , wherein said second portion of the input electrical signal is a substantially proportional inverse replica of said first portion of the input electrical signal. A protective encapsulation including hollow dielectric microspheres to reduce electrical crosstalk and may also include light absorbers to reduce optical crosstalk may be applied. The waveguide substrate of the device may include light collectors or traps for redirecting and attenuating portions of the optical signal propagating in the waveguiding layer on the substrate but not being guided by the waveguide.

Description

[0001] Priority claims to related applications [0002] This application claims priority based on: (i) co-pending U.S. Provisional Application No. 61 / 328,675 filed April 28, 2010 in the name of Joel S. Paslaski, (ii) filed in the name of Rolf A. Wyss at Co-pending U.S. Provisional Application No. 61 / 358,877, filed June 25, 2010, and (iii) co-pending U.S. Provisional Application, filed September 6, 2010 in the names of Peter C. Application No. 61 / 380,310, each of said provisional applications is hereby incorporated by reference as if fully set forth herein. technical field [0003] The field of the invention relates to bi-directional or multi-channel optoelectronic devices, including bi-directional optoelectronic transceivers. In particular, disclosed herein are (i) light source driving circuits, (ii) multifunctional packaging, and (iii) light-trapping structures formed on waveguide substrates for reducing crosstalk in bidirectional optoelectronic devices . Background techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2507G02B6/42
CPCG02B6/4246G02B6/4277H04B10/40G02B6/4253G02B6/4283H04B10/43H04B10/501H04B10/541H04B10/697
Inventor J·S·帕斯拉斯基A·瑞兹P·C·塞瑞卡尔R·A·维斯
Owner HUAWEI TECH CO LTD