Abstract
We describe a methodology for designing the optimal gain profiles for gain-based, tunable, broadband, slow-light pulse delay devices based on stimulated Brillouin scattering. Optimal gain profiles are obtained under system constraints such as distortion, total pump power, and maximum gain. The delay performance of three candidate systems: Gaussian noise pump broadened (GNPB), optimal gain-only, and optimal gain+absorption are studied using Gaussian and super-Gaussian pulses. For the same pulse bandwidth, we find that the optimal gain+absorption medium improves the delay performance by 2.1 times the GNPB medium delay and 1.3 times the optimal gain-only medium delay for Gaussian pulses. For the super-Gaussian pulses the optimal gain-only medium provides a fractional pulse delay 1.8 times the GNPB medium delay.
Highlights
All-optical processing such as data synchronization and optical buffering is required for highspeed optical networks
Slow-light systems based on multiple gain lines have been experimentally demonstrated and shown to improve the delay performance of single-line gain systems under maximum gain and distortion constraints. 9–14 Because the half-width at half-maximum (HWHM) linewidths of all gain sidebands generated via this method will be 25MHz, many closely space lines are required in order to achieve large delay and low distortion as the data bandwidth increases
We present a technique for determining the optimal pump profiles for broadband stimulated Brillouin scattering (SBS) slowlight systems under distortion and system resource constraints such as total pump power and maximum intensity gain
Summary
All-optical processing such as data synchronization and optical buffering is required for highspeed optical networks This has led to intense research in optically controlled tunable pulse delay and slow-light pulse propagation.[1,2,3,4,5,6,7,8] Many studies performed to date have generated tunable pulse delay using the stimulated Brillouin scattering (SBS) process in optical fibers to create gain features[7−25]. 9–14 Because the HWHM linewidths of all gain sidebands generated via this method will be 25MHz, many closely space lines are required in order to achieve large delay and low distortion as the data bandwidth increases. These results provide useful system designs for creating slow-light devices, but they serve as upper bounds on achievable slow-light delay using SBS gain and absorption given reasonable system constraints
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
