Location History:
- Ypsilanti, MI (US) (1990)
- Ann Arbor, MI (US) (1993)
Company Filing History:
Years Active: 1990-1993
Title: Innovations by Luciano Coletta in Fiber Optic Technology
Introduction
Luciano Coletta is a notable inventor based in Ypsilanti, MI (US), recognized for his contributions to fiber optic technology. He holds 2 patents that showcase his innovative approach to improving fiber optic sensing systems. His work has significantly advanced the field, particularly in the areas of drift correction and sensor efficiency.
Latest Patents
One of Coletta's latest patents focuses on "Drift correction for fiberoptic pressure sensors." This invention introduces an improved intensity-encoded fiber optic sensor that incorporates novel drift correction and filtering methods. The initial embodiments of this invention aim to eliminate unwanted higher-order core and cladding modes from an intensity-encoded signal in an optical fiber. This is achieved through the use of mode strippers and mode filters strategically placed within the sensing system. Additionally, the invention presents an enhanced technique for long-term temporal drift cancellation in fiber optic pressure sensors. This technique involves periodically applying pressure to the sensor tip to determine the measured voltage at which the sensor diaphragm contacts other elements. The measured voltage is then subtracted from an initial calibration voltage, providing a constant correction term to the measured signal.
Another significant patent by Coletta pertains to "Fiber optic sensors." This invention reveals several improvements in fiber optic sensing systems. One key enhancement involves a dielectric filter applied directly to the sensing end of an optical fiber detector. This filter reflects a reference light beam of one wavelength while allowing a sensing signal of a different wavelength to pass through. Both light signals are reflected back through the fiber, ensuring they are attenuated in a similar manner in response to various noise sources. The ratio of the intensity of these two signals is proportional to the sensed parameter, making the system essentially self-compensating. The dielectric filter is preferably coated onto the exit end of the fiber using vapor deposition techniques. Furthermore, time division multiplexing is utilized to sequentially activate multiple light sources, with a single photodetector measuring the intensity of the reflected signals. Another improvement includes the detection unit, where an off-axis parabolic mirror is employed to achieve excellent separation efficiency of input and reflected signals.
Career Highlights
Coletta is associated with Fiberoptic Sensor Technologies, Inc., where he continues to innovate and develop advanced fiber optic technologies. His work has had a profound impact on the industry, enhancing the performance and reliability of fiber optic sensors.