John Martinho

Title: John Martinho: Innovator in Optical Technologies

Introduction

John Martinho is a notable inventor based in Ottawa, Canada. He has made significant contributions to the field of optical technologies, holding a total of 3 patents. His work focuses on advanced laser systems and polarization measurement techniques.

Latest Patents

One of his latest patents is the "Fiber Coupled Laser Source Pump with Wavelength Division Multiplexer." This invention involves a pump laser package that includes an input fiber to send signal light along a first optical path. A first lens is arranged on this path, while a source sends pump light on a second optical path, which is equipped with a second lens and a negative lens. These lenses work together to create a virtual image associated with the pump light. The package also features an output fiber on a third optical path, with the first lens arranged on this path as well. Additionally, a combiner is included to receive both the signal light and the pump light, sending them along the third optical path.

Another significant patent is the "Polarization State Frequency Multiplexing." This method allows for the rapid measurement of polarization-dependent properties of an optical device under test. It employs a Mach-Zehnder interferometer (M-Z) with a reference arm and a signal arm. In the signal arm, a device called a 'polarization state frequency multiplexer' (PSFM) splits the light into four ports, transforming each part into one of four predetermined polarization states. The combined light is then passed through the device under test and interfered with the reference arm light at the output of the M-Z interferometer. This innovative approach enables the identification and measurement of signal levels for each polarization state.

Career Highlights

Throughout his career, John Martinho has worked with prominent companies in the optical industry, including JDS Uniphase Corporation and Lumentum Operations LLC. His experience in these organizations has contributed to his expertise in developing cutting-edge optical technologies.

Collaborations

John has collaborated with notable professionals in his field, including Thomas Friessnegg and Yi Liang. These partnerships have further enhanced his work and innovation in optical technologies.

Conclusion

John Martinho is a distinguished inventor whose contributions to optical technologies have made a significant impact in the industry. His innovative patents and collaborations reflect his dedication to advancing the field.