Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

High frequency resonance-free loss modulation in a duo-cavity VCSEL

[+] Author Affiliations
J. van Eisden, M. Yakimov, V. Tokranov, M. Varanasi, O. Rumyantsev, S. R. Oktyabrsky

Univ. at Albany

E. M. Mohammed, I. A. Young

Intel Corp.

Proc. SPIE 6908, Vertical-Cavity Surface-Emitting Lasers XII, 69080M (January 29, 2008); doi:10.1117/12.763859
Text Size: A A A
From Conference Volume 6908

  • Vertical-Cavity Surface-Emitting Lasers XII
  • Chun Lei; James K. Guenter
  • San Jose, CA | January 19, 2008

abstract

We have proposed and demonstrated the principle of optical decoupling of the AC modulation component in a lossmodulated Vertical Cavity Surface Emitting Laser (VCSEL) using a detuned duo-cavity device. This approach allows the VCSEL power to be modulated without changing the photon density in the active region. Analysis of reflectivity spectra of a Fabri-Perot cavity with absorber shows that at a certain detuning from the resonance wavelength, reflectivity is almost independent of absorption magnitude. At this spectral detuning between the active region cavity and modulator cavity, a feedback-free transmission modulation of the VCSEL output is possible. The use a multiple-double-QW (MDQW) electroabsorption modulator allows absorption swing between 0.2% and 2% per pass. Optical power modulation of transmission with contrasts up to 40% and chirp of less than 0.05 nm at 930 nm was demonstrated with our design. Initial cavity resonance detuning is controlled through growth and was determined to be ideally ~0.7 nm from analysis of stand-alone absorber cavities. Resonance coupling (splitting) was calculated to be less than 0.3 nm in case of matching resonances. Applying bias at the MDQW modulator section allows adjustment of detuning between cavities by changing the top cavity resonance wavelength mainly via Kramers-Kronig relations. The high frequency modulation characteristics can be tuned in this manner to show little or no sign of resonance, in which case the high frequency roll-off of the modulation response is entirely determined by parasitics of the modulator section. We have demonstrated a flat (+/-3db) response up to 20 GHz.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

J. van Eisden ; M. Yakimov ; V. Tokranov ; M. Varanasi ; O. Rumyantsev, et al.
"High frequency resonance-free loss modulation in a duo-cavity VCSEL", Proc. SPIE 6908, Vertical-Cavity Surface-Emitting Lasers XII, 69080M (January 29, 2008); doi:10.1117/12.763859; http://dx.doi.org/10.1117/12.763859


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.