Polarization-Insensitive Monolithic 40-Gbps SOA–MZI Wavelength Converter With Narrow Active Waveguides

A polarization-insensitive monolithic 40-Gbps semiconductor optical amplifier (SOA)-Mach-Zehnder interferometer wavelength converter has been developed. Based on the photon-electron rate equation, we optimized the dimensions of the waveguide structure to maximize the field confinement in the active layer. An InGaAsP active layer with narrow SOA waveguide effectively enables polarization-insensitive high-speed wavelength conversion. High-precision wafer processing technique enabled the fabrication of submicrometer-wide active waveguides with low current leakage. Input waveguide arrays were fabricated at intervals of 25 mum and mounted in a module with two-lens aspherical lens optics. The 40-Gbps nonreturn-to-zero wavelength conversion experiment demonstrates a clear eye opening over full C-band operation

[1]  K. Nishimura,et al.  Operational design on high-speed semiconductor optical amplifier with assist light for application to wavelength converters using cross-phase modulation , 2006, IEEE Journal of Quantum Electronics.

[2]  T. Hatta,et al.  All-optical format conversion from NRZ-OOK to RZ-BPSK using SOA-MZI wavelength converter , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[3]  S. Chandrasekhar,et al.  Monolithically integrated 40-gb/s switchable wavelength converter , 2006, Journal of Lightwave Technology.

[4]  V. Lal,et al.  Performance optimization of an InP-based widely tunable all-optical wavelength converter operating at 40 Gb/s , 2006, IEEE Photonics Technology Letters.

[5]  T. Nishimura,et al.  Optical 3R Wavelength Conversion by a combination of Self-pulsating DFB Laser and SOA-based Mach-Zehnder Interferometer , 2005 .

[6]  N. Futakuchi,et al.  28-ps switching window with a selective area MOVPE all-optical MZI switch , 2005, IEEE Photonics Technology Letters.

[7]  K. Magari,et al.  10-Gb/s low-input-power SOA-PLC hybrid integrated wavelength converter and its 8-slot unit , 2004, Journal of Lightwave Technology.

[8]  Bruno Lavigne,et al.  Optical regeneration at 40 Gb/s and beyond , 2003 .

[9]  Bruno Lavigne,et al.  Ultimate performance of SOA-based interferometer as decision element in 40 Gbit/s all-optical regenerator , 2002, Optical Fiber Communication Conference and Exhibit.

[10]  Y. Ueno,et al.  168-Gb/s all-optical wavelength conversion with a symmetric-Mach-Zehnder-type switch , 2001, IEEE Photonics Technology Letters.

[11]  M. Renaud,et al.  40-Gb/s all-optical wavelength conversion, regeneration, and demultiplexing in an SOA-based all-active Mach-Zehnder interferometer , 2000, IEEE Photonics Technology Letters.

[12]  C. Janz,et al.  Design optimization of all-active Mach-Zehnder wavelength converters , 1999, IEEE Photonics Technology Letters.

[13]  S. L. Danielsen,et al.  All-optical wavelength conversion at bit rates above 10 Gb/s using semiconductor optical amplifiers , 1997 .

[14]  Richard V. Penty,et al.  Wavelength conversion using semiconductor optical amplifiers , 1997 .

[15]  S. L. Danielsen,et al.  All-optical wavelength conversion by semiconductor optical amplifiers , 1996 .

[16]  K. Tajima.  All-Optical Switch with Switch-Off Time Unrestricted by Carrier Lifetime , 1993 .

[17]  Hitoshi Kawaguchi,et al.  Absorptive and dispersive bistability in semiconductor injection lasers , 1987 .

[18]  R. Olshansky,et al.  Measurement of radiative and nonradiative recombination rates in InGaAsP and AlGaAs light sources , 1984 .