Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm

N. A. Naderi, M. Pochet, V. Kovanis, L. F. Lester

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The high-speed modulation characteristics of an injection-locked quantum dot Fabry-Perot (FP) semiconductor laser operating at 1310-nm under strong injection are investigated experimentally with a focus on the enhancement of the modulation bandwidth. The coupled system consists of a directly-modulated Quantum Dot (QD) slave injected-locked by a distributed feedback (DFB) laser as the master. At particular injection strengths and zero detuning cases, a unique modulation response is observed that differs from the typical modulation response observed in injection-locked systems. This unique response is characterized by a rapid low-frequency rise along with a slow high-frequency roll-off that enhances the 3-dB bandwidth of the injection-locked system at the expense of losing modulation efficiency of about 20 dB at frequencies below 1 GHz. Such behavior has been previously observed both experimentally and theoretically in the high-frequency response characteristic of an injection-locked system using an externally-modulated master; however, the results shown here differ in that the slave laser is directly-modulated. The benefit of the observed response is that it takes advantage of the enhancement of the resonance frequency achieved through injection-locking without experiencing the low frequency dip that significantly limits the useful bandwidth in the conventional injection-locked response. The second benefit of this unique response is the improvement in the high frequency roll-off that extends the bandwidth. Finally a 3-dB bandwidth improvement of greater than 8 times compared to the free-running slave laser has been achieved.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7597
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices XVIII - San Francisco, CA, United States
Duration: Jan 25 2010Jan 28 2010

Other

OtherPhysics and Simulation of Optoelectronic Devices XVIII
CountryUnited States
CitySan Francisco, CA
Period1/25/101/28/10

Fingerprint

Quantum dot lasers
Quantum Dots
Injection
Enhancement
quantum dots
Bandwidth
Modulation
injection
Laser
bandwidth
augmentation
modulation
lasers
Semiconductor quantum dots
Lasers
Distributed feedback lasers
Low Frequency
low frequencies
Frequency response
injection locking

Keywords

  • High-speed modulation characteristics
  • Injection-locking
  • Quantum dot semiconductor lasers

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Naderi, N. A., Pochet, M., Kovanis, V., & Lester, L. F. (2010). Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7597). [759719] https://doi.org/10.1117/12.842284

Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm. / Naderi, N. A.; Pochet, M.; Kovanis, V.; Lester, L. F.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597 2010. 759719.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Naderi, NA, Pochet, M, Kovanis, V & Lester, LF 2010, Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7597, 759719, Physics and Simulation of Optoelectronic Devices XVIII, San Francisco, CA, United States, 1/25/10. https://doi.org/10.1117/12.842284
Naderi NA, Pochet M, Kovanis V, Lester LF. Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597. 2010. 759719 https://doi.org/10.1117/12.842284
Naderi, N. A. ; Pochet, M. ; Kovanis, V. ; Lester, L. F. / Bandwidth enhancement in an injection-locked quantum dot laser operating at 1.31-μm. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7597 2010.
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