Zobrazeno 1 - 10
of 76
pro vyhledávání: '"G.A. Alphonse"'
Autor:
P.J. Delfyett, L.T. Florez, N. Stoffel, T. Gmitter, N.C. Andreadakis, Y. Silberberg, J.P. Heritage, G.A. Alphonse
Publikováno v:
IEEE Journal of Quantum Electronics. 28:2203-2219
Several ultrafast optical pulse generation techniques utilizing external cavity semiconductor lasers are described. These techniques include active mode locking, passive mode locking, hybrid mode locking, and several chirp compensation techniques. Ut
Autor:
G.A. Alphonse, M. Toda
Publikováno v:
Journal of Lightwave Technology. 10:215-219
The modal reflectivity of an angled facet has been calculated for index-guided devices when the fundamental mode excites various higher order modes at the facet. The calculations were carried out for waveguide widths ranging from 2 to 20 mu m for var
Publikováno v:
Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges.
Summary form only given. The longitudinal modes of a multimode laser diode suffer from intensity fluctuations that, when coupled with spectral filtering, result in mode partition noise (MPN). We have significantly decreased the MPN in a modelocked, m
Publikováno v:
Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243).
Active modelocked diode lasers are used to generate a multiplicity of individual modelocked wavelengths (/spl sim/20) at single channel rates of 5 Gbit/s for data transmission and signal processing applications in hybrid WDM-TDM optical networks.
Publikováno v:
OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177).
Publikováno v:
Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243).
The pulse shaping dynamics are measured and explained using self phase locking (SPM), saturable absorption and group velocity dispersion (GVD). In addition, intracavity spectral shaping and inverse bow tie SOAs are shown to be promising for future pu
Publikováno v:
Nonlinear Optics: Materials, Fundamentals and Applications.
We demonstrate a hybridly modelocked multiwavelength semiconductor laser using an intracavity saturable absorber. Intensity autocorrelations show improved interchannel phase coherence versus active modelocking. Eye diagrams illustrate the suppression
Publikováno v:
Ultrafast Electronics and Optoelectronics.
Compact, efficient sources of ultrashort, high repetition rate optical pulses are necessary for a variety of commercial applications. Previously, we have demonstrated the potential for shaping the intracavity modelocked spectrum of external cavity hy
Publikováno v:
Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178).
We have presented results that show the promise of intracavity spectral shaping to avoid gain-narrowing effects in modelocked semiconductor diode lasers and have produced optical pulses of 330 fs duration. High average powers were obtained by employi
Publikováno v:
Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178).
We demonstrate broadband spectral coupling in a novel multiwavelength mode-locked semiconductor laser, which is capable of coherently coupling the spectral phases over a range of six times that of the normal active mode locking. The physical mechanis