Abstract We demonstrate a simple, femtosecond-scale wavelength tunable, subwavelength-thick nanostructure that performs efficient conversion from the infrared to ultraviolet. The output can be tuned by varying input power of pump beam and/or relative delay control with respect beam, and does not require any external realignment system. is made chalcogenide glass possesses strong Kerr nonlineari...

In this paper, two bio-inspired Quality of Service (QoS) multicast algorithms are proposed in IP over dense wavelength division multiplexing (DWDM) optical Internet. Given a QoS multicast request and the delay interval required by the application, both algorithms are able to find a flexible QoS-based cost suboptimal routing tree. They first construct the multicast trees based on ant colony opti...

Highly-integrated multi-functional optoelectronic chip for next generation optical networks Department of Elec Email We introduce a novel, highly-integrate optoelectronic microchip that allows wavelength conversion, multi-waveleng regeneration and switching. This device r optical-electrical-optical conversion for alleviating the problems of high compon costs, large space and high power consu sc...

Wavelength Division Multiplexed switching networks are important for the future transport networks. This paper analyzes the performance of various wavelength assignment algorithm and their effect on the blocking probability of the connection request in the optical network with traffic grooming. The wavelength assignment is a unique feature in wavelength routed network that distinguish them from...

We report a nanosecond sum-frequency generating optical parametric oscillator based on a single KTiOAsO4 crystal that is simultaneously phase matched for optical parametric generation and sum-frequency generation. Pumped at a wavelength of 1064 nm by a Q-switched Nd:YAG laser, this device produces 10.4-ns-long 8.3 mJ red pulses at a wavelength of 627 nm with 21% energy conversion efficiency. Th...

Nanoscale wavelength-converted optical components are promising components for communication and optical information processing in integrated photonic system. In this work, we report a facile strategy for realizing continuously tunable wavelength-converted wave-guiding in dye-doped nanofibers. The nanofibers with diameters of 200-800 nm have an absorption coefficient of about 80 cm(-1) and a se...

Wavelength conversion is very essential in wavelength division multiplexing (WDM) networks where blocking due to wavelength contention can be reduced to a good extent. We present a theoretical model to analyze the effect of intraband effects like spectral hole burning and carrier heating on wavelength conversion exploiting the cross-gain modulation (XGM) technique in a bulk semiconductor optica...

Over the recent years, routing and wavelength assignment algorithms (RWA) have been employed to increase the performance of existing optical network architectures. However, these methods are not longer sufficient as the traffic over the Internet increases rapidly and new switching optical network architectures are needed to provide additional bandwidth. This paper reports an investigation into ...

Dynamic wavelength assignment in a WDM all-optical network with partial and sparse wavelength conversion is discussed in this paper. The performance of unidirectional and bidirectional ring networks in terms of blocking probability, conversion gain and fairness is evaluated under various types of offered traffic patterns. Smooth and peaked patterns have been considered in addition to the classi...

Introduction The purpose of the current study was to determine optical sensitivity of N-isopropyl acrylamide NIPAM and polyacrylamide gelatin and tetrakis hydroxymethyl phosphoniun chloride (PAGAT) polymer gels for different wavelength of visible light spectrum applied in optical computed tomography method. Materials and Methods NIPAM and PAGAT polymer gels with conventional formulations used f...