Project Examples

Laser, photonics, and fiber-optics consulting for telecommunications, fiber-optic networks, dense wavelength division multiplexing (DWDM), cellular backhaul, High Frequency Trading (HFT), Homeland Security, Public Safety, Government, and Research & Development (R&D). Read more hereā€¦

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.

Optical Fiber Link Budgets


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


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 PMD Measurements


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


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


Calculated maximum fiber distance vs. Polarization Mode Dispersion (PMD) and data-rate (assumes no external PMD compensation).

Spontaneous Parametric Down-Conversion from BBO

Type II SPDC from Beta Barium Borate crystal aligned to produce two orthogonal polarization rings. Entangled light is at the intersection of the rings.

Ghost Images

Quantum entangled ghost image of Boeing logo and plane.

Ti:Sapphire Pumped with Argon Laser

Ti:Sapphire crystal pumped with Argon laser (inside Coherent's Mode-Locked Mira Laser).

Ghost Image of Double Slit

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


Disaster recover: Free Space Optics (FSO) link connecting NJ and NY Merrill Lynch offices after 9/11. Photo by Mike Lucero.