Rise Time and Gain Fluctuations of an Electrooptical Amplified Switch Based on Multipulse Injection in Semiconductor Optical Amplifiers

Author(s)

Ribeiro, Napoleao S. ^[1] ; Toazza, Adriano L. ; Gallep, Cristiano M. ^[2] ; Conforti, Evandro ^[1]

Affiliation

^[1] Univ Estadual Campinas, Dept Microwaves & Opt, Fac Elect & Comp Engn, DMO FEEC, BR-13083970 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Div Telecommun Technol, CESET, BR-13484370 Limeira, SP - Brazil

• Document type: Journal article
• Source: IEEE PHOTONICS TECHNOLOGY LETTERS; v. 21, n. 9-12, p. 769-771, MAY-JUN 2009.
• Web of Science Citations: 8

Abstract

Subnanosecond electrooptical switching times with 26-dB extinction ratio were obtained by using semiconductor optical amplifiers driven by a multipulse injection current. The multipulse switching current was generated by superimposing fast electronic pulse signals in a microwave resistive combiner. Although very fast switching is achievable, nonlinear behavior and circuits parasitic induce gain fluctuations and overshooting during the OFF-ON process. Theoretical and experimental results show that the reduction of parasitics is an important parameter for improving the switching performance. The multipulse injection technique can improve the switching speed for a chosen degree of overshoot. (AU)

• FAPESP's process: 05/51689-2 - Optics and Photonics Research Center at UNICAMP
• Grantee: Hugo Luis Fragnito
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 07/56024-4 - Coherent optical technologies
• Grantee: Evandro Conforti
• Support Opportunities: Research Grants - Research Partnership for Technological Innovation - PITE