Comparison of DFB edge emitting laser vs. VCSEL

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SUMMARY

The discussion centers on the comparison between Distributed Feedback (DFB) edge emitting lasers and Vertical-Cavity Surface-Emitting Lasers (VCSELs). Participants note that existing literature tends to favor one technology over the other, with VCSEL papers emphasizing advantages and edge emitting laser articles focusing on improvements. Key resources shared include articles on DFB and VCSEL lasers from RP Photonics and a performance evaluation paper from DTU. The conversation highlights the need for a balanced review that covers both technologies comprehensively.

PREREQUISITES
  • Understanding of semiconductor laser technology
  • Familiarity with Fabry-Perot edge emitting lasers
  • Knowledge of DFB laser principles
  • Awareness of VCSEL characteristics
NEXT STEPS
  • Research the performance evaluation of DFB and VCSEL lasers in radio-over-fiber systems
  • Explore the advantages and disadvantages of DFB lasers in industrial applications
  • Study the latest advancements in VCSEL technology
  • Review comparative studies on DFB and VCSEL lasers from Google Scholar
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Engineers, researchers, and students in the fields of photonics and semiconductor technology seeking to understand the differences and applications of DFB and VCSEL lasers.

Mindscrape
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Does anyone know of an article that has a good in-depth, side by side comparison of DFB edge emitting lasers and VCSEL lasers? From my research it seems to me that the VCSEL papers are all trying to justify why laser production should shift towards VCSEL, and mostly list the advantages over an edge emitting laser; and, conversely, the edge emitting articles are all focused on some new improvement in edge emitting lasers and not competing with VCSEL. So, I'm trying myself to figure out the pros and cons between the two, but it would be great to have something reinforce what I've come up with.

Up until this point I've really only known crystal lasers, so I already know the general concepts of lasers, and I figured it's about time for me to get some knowledge in semiconductor lasers. I started with the basic Fabry-Perot edge emitting laser, and now learning about DFB and VCSEL lasers. I feel like a total laser noob right now. :)
 
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These two reference articles describe each type, and also describe some differences:
http://www.rp-photonics.com/distributed_feedback_lasers.html
http://www.rp-photonics.com/vertical_cavity_surface_emitting_lasers.html

What you need is a review paper which includes both DFB and VCSEL lasers. A Google search found:
http://orbit.dtu.dk/en/publications...502e-ca61-4968-8a88-51085e4befce)/export.html

There were more on Google Scholar.

This industrial application article may also be helpful:
http://zone.ni.com/devzone/cda/ph/p/id/125
 

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