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Full-Text Articles in Engineering
Wavelength Independency Of Spatially Multiplexed Communication Channels In Standard Multimode Optical Fibers, Syed H. Murshid, Gregory L. Lovell, Arnob Hridoy, Gurinder Parhar, Abhijit Chakravarty, Saud F. Alanzi, Bilas Chowdhury
Wavelength Independency Of Spatially Multiplexed Communication Channels In Standard Multimode Optical Fibers, Syed H. Murshid, Gregory L. Lovell, Arnob Hridoy, Gurinder Parhar, Abhijit Chakravarty, Saud F. Alanzi, Bilas Chowdhury
Electrical Engineering and Computer Science Faculty Publications
Spatial domain multiplexing (SDM), also known as space division multiplexing, adds a new degree of photon freedom to existing optical fiber multiplexing techniques by allocating separate radial locations to different channels of the same wavelength as a function of the input launch angle. These independent MIMO channels remain confined to their designated locations while traversing the length of the carrier fiber owing to helical propagation of light inside the fiber core. As a result, multiple channels of the same wavelength can be supported inside a single optical fiber core, thereby allowing spatial reuse of optical frequencies and multiplication of fiber …
Combining Spatial Domain Multiplexing And Orbital Angular Momentum Of Photon-Based Multiplexing To Increase The Bandwidth Of Optical Fiber Communication Systems, Syed H. Murshid, Saud F. Alanzi, Arnob Hridoy, Gregory L. Lovell, Gurinder Parhar, Abhijit Chakravarty, Bilas Chowdhury
Combining Spatial Domain Multiplexing And Orbital Angular Momentum Of Photon-Based Multiplexing To Increase The Bandwidth Of Optical Fiber Communication Systems, Syed H. Murshid, Saud F. Alanzi, Arnob Hridoy, Gregory L. Lovell, Gurinder Parhar, Abhijit Chakravarty, Bilas Chowdhury
Electrical Engineering and Computer Science Faculty Publications
Spatial domain multiplexing/space division multiplexing (SDM) can increase the bandwidth of existing and futuristic optical fibers by an order of magnitude or more. In the SDM technique, we launch multiple singlemode pigtail laser sources of the same wavelength into a carrier multimode fiber at different angles. The launching angles decide the output of the carrier fiber by allocating separate spatial locations for each channel. Each channel follows a helical trajectory while traversing the length of the carrier fiber, thereby allowing spatial reuse of optical frequencies. We launch light from five different single-mode pigtail laser sources (of same wavelength) at different …
Attenuation And Bit Error Rate For Four Co-Propagating Spatially Multiplexed Optical Communication Channels Of Exactly Same Wavelength In Step Index Multimode Fibers, Syed H. Murshid, Abhijit Chakravarty
Attenuation And Bit Error Rate For Four Co-Propagating Spatially Multiplexed Optical Communication Channels Of Exactly Same Wavelength In Step Index Multimode Fibers, Syed H. Murshid, Abhijit Chakravarty
Electrical Engineering and Computer Science Faculty Publications
Spatial domain multiplexing (SDM) utilizes co-propagation of exactly the same wavelength in optical fibers to increase the bandwidth by integer multiples. Input signals from multiple independent single mode pigtail laser sources are launched at different input angles into a single multimode carrier fiber. The SDM channels follow helical paths and traverse through the carrier fiber without interfering with each other. The optical energy from the different sources is spatially distributed and takes the form of concentric circular donut shaped rings, where each ring corresponds to an independent laser source. At the output end of the fiber these donut shaped independent …
Free-Space Optical Communication Link Using Spatial Optical Encryption, Syed H. Murshid, William B. Howard, Abhijit Chakravarty
Free-Space Optical Communication Link Using Spatial Optical Encryption, Syed H. Murshid, William B. Howard, Abhijit Chakravarty
Electrical Engineering and Computer Science Faculty Publications
Free-space optical links are ideal for short-range (1 km to 3 km) communications. An innovative new technique called Spatial Optical Encryption can be used to secure laser data communications. With this technique, data can be encoded and transmitted spatially through a single fiber, and then transmitted over a free-space optical link. Different sources of data could be simultaneously sent over the same fiber. This endeavor demonstrates the design and performance issues of such a transmitter and receiver using Spatial Optical Encryption over an environmental link of 100 meters.