Project Examples
Photonics & Fiber-Optics
Photonics & Fiber-Optics
Quantum Entanglement experiment using SPDC produced from a type II cut Beta Barium Borate (BBO) crystal pumped with a 406 nm UV laser.
MMW-FSO Hybrid Link–Distance vs. Availability
Photonics & Fiber-Optics, Point-to-Point Links, System Engineering/Modeling
Maximum distance vs. availability for a hybrid MMW/FSO link in Chicago using certain FSO and MMW radio specifications.
FSO Up-Time Percentage in a Hybrid MMW/FSO link
Photonics & Fiber-Optics, Point-to-Point Links, System Engineering/Modeling
Plot assumes that the MMW radio link is the primary link. Calculation assumed certain FSO and MMW radio specifications.
Ground to Space Optical Attenuation
Photonics & Fiber-Optics, System Engineering/Modeling
Modeling of ground to space attenuation at 1064 nm for NASA's "Ride-the Light" project.
Optical Fiber Link Budgets
Photonics & Fiber-Optics, System Engineering/Modeling
Optical fiber link budget that automatically reads measured attenuation, chromatic and polarization-mode dispersion as a function of wavelength. Spreadsheet also allows inclusion of measured splice or connector losses, and laser/modulation types to be included for the power and rise-time link budgets.
Optical Fiber Chromatic Dispersion Measurements
Photonics & Fiber-Optics, System Engineering/Modeling
Measured chromatic dispersion as a function of DWDM wavelengths and curve fit of dispersion versus wavelength to be used in the fiber link budget.
Optical Fiber Attenuation vs. DWDM Wavelength
Photonics & Fiber-Optics, System Engineering/Modeling
Optical fiber attenuation versus wavelength and curve fit for inclusion into the fiber link budget.
Optical Fiber PMD Measurements
Photonics & Fiber-Optics, System Engineering/Modeling
Optical fiber Polarization Mode Dispersion (PMD) measurements. Older installed optical fibers may not have a PMD specification, in which case it is necessary to measure the PMD to ensure the fiber segment can support higher modulation rates. In this project, fiber PMD was measured as preparation for a network upgrade to OC-192, where we tagged individual fibers that would not be able to support OC-192 (10 Gbps) due to an excessive PMD.
Measured PMD Statistics
Photonics & Fiber-Optics, System Engineering/Modeling
PMD statistics for a service provider's fiber-optic network. Note that some optical fibers in this network were over 15 years old, which accounts for the larger PMD values.
Maximum Fiber Distance vs. PMD
Photonics & Fiber-Optics, System Engineering/Modeling
Calculated maximum fiber distance vs. Polarization Mode Dispersion (PMD) and data-rate (assumes no external PMD compensation).
Spontaneous Parametric Down-Conversion from BBO
Photonics & Fiber-Optics
Type II SPDC from Beta Barium Borate crystal aligned to produce two orthogonal polarization rings. Entangled light is at the intersection of the rings.
Ti:Sapphire Pumped with Argon Laser
Photonics & Fiber-Optics
Ti:Sapphire crystal pumped with Argon laser (inside Coherent's Mode-Locked Mira Laser).
Ghost Image of Double Slit
Photonics & Fiber-Optics
Quantum entanglement ghost imaging of double slit. First published case of a ghost image in reflection mode.
FSO Installation for NY-NJ Link after 9/11
Photonics & Fiber-Optics, Point-to-Point Links
Disaster recover: Free Space Optics (FSO) link connecting NJ and NY Merrill Lynch offices after 9/11. Photo by Mike Lucero.
