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Related Experiment Videos

Misalignment correction for optical interconnects using vertical cavity semiconductor optical amplifiers.

Deqiang Song1, Haijiang Zhang, Pengyue Wen

  • 1Department of Electrical and Computer Engineering, University of California San Diego, San Diego, California, USA. desong@soliton.ucsd.edu

Applied Optics
|August 7, 2007
PubMed
Summary
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This study introduces a vertical cavity semiconductor optical amplifier (VCSOA) to fix optical misalignment in board-to-board connections, reducing signal loss and crosstalk. The VCSOA module corrects angular and lateral misalignments effectively.

Area of Science:

  • Optical engineering
  • Photonics
  • Semiconductor devices

Background:

  • Board-to-board optical interconnects face challenges from board and backplane connection misalignment.
  • Misalignment leads to optical signal loss and interchannel crosstalk, degrading performance.

Purpose of the Study:

  • To propose and characterize a novel module for correcting optical misalignment in board-to-board interconnects.
  • To utilize a vertical cavity semiconductor optical amplifier (VCSOA) for active misalignment correction.

Main Methods:

  • Design and implementation of a VCSOA-based optical connector module.
  • Characterization of the VCSOA's angular and lateral misalignment correction capabilities.
  • Measurement of the VCSOA's acceptance angle and lateral correction ability with a 30 microW optical signal at 1 GHz.

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Main Results:

  • The designed module effectively corrects both angular and lateral optical misalignments.
  • The VCSOA demonstrated an acceptance angle of 9.4 degrees (full angle at 3 dB gain drop).
  • Lateral misalignment correction ability was quantified as 0.16f, where f is the mini lens focal length.

Conclusions:

  • The VCSOA-based module offers a viable solution for mitigating optical misalignment issues in board-to-board interconnects.
  • This technology can significantly improve the reliability and performance of optical communication systems.
  • Further research can explore optimization for higher data rates and different misalignment tolerances.