Researchers develop system to convert one wavelength of light into another without need to phase match

wavelength of light

One of the biggest challenges in developing integrated photonic circuits — which use light rather than electrons to transport information — is to control the momentum of light.  Colors of light travel at different speeds through a material but in order for light to be converted between colors, it needs to have the same momentum or phase.

Many devices have been designed to momentum-match or phase-match light at various points throughout an integrated circuit but what if the phase-matching process could be circumvented all together in certain cases?

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences, together with collaborators from the Fu Foundation School of Engineering and Applied Science at Columbia University, have developed a system to convert one wavelength of light into another without the need to phase match.

“For any wavelength conversion process to be efficient, it has to be carefully designed to phase match, and it only works at a single wavelength,” said Marko Loncar, the Tiantsai Lin Professor of Electrical Engineering at SEAS and senior author of the paper. “The devices shown in this work, in contrast, do not need to satisfy the phase-matching requirement, and can convert light in a broad color range.” Continue reading “Researchers develop system to convert one wavelength of light into another without need to phase match”

"Who is Commscope and how to use PIC’s in an optical network" – Presented by Willy Rietveld, Commscope

On the 28th of August 2015 CommScope Holding Company, Inc. has completed its acquisition of TE Connectivity’s Telecom, Enterprise and Wireless businesses, a leader in fiber optic connectivity for wireline and wireless networks.  The all-cash transaction, valued at approximately $3 billion, strengthens CommScope’s position as a leading communications infrastructure provider with deeper resources to meet the world’s growing demand for network bandwidth.  This transaction creates a stronger company with greater innovation, employee talent and overall capabilities to serve customers in four major areas: 1) Indoor and outdoor wireless networks, 2) Data centers and central offices, 3) Connected and efficient buildings and 4) Access and backhaul networks. Commscope is now actively developing PIC’s for the next generation of optical networks.

About Willy Rietveld Continue reading “"Who is Commscope and how to use PIC’s in an optical network" – Presented by Willy Rietveld, Commscope”

"The Coming of Age of Photonic Integrated Circuit Technology" – Presented by Michael Wale, Oclaro Technology

Photonic Integrated Circuit (PIC) technology has evolved over more than 30 years to become a key enabler for high-performance optical communications systems, which form the backbone of the internet and thereby underpin our information-intensive world.

PICs can also be an enabler for new and diverse business sectors, including medical, industrial and aerospace applications.

Major progress has been achieved over the last few years in the development of generic platform-based design and manufacturing methods, which will facilitate the use of PICs in new applications and stimulate innovative product design.

The talk will review the current state of the art.

About Prof. Michael J. Wale Continue reading “"The Coming of Age of Photonic Integrated Circuit Technology" – Presented by Michael Wale, Oclaro Technology”

"Photonic integration technology and devices for gas sensing (LWAVE-Tech)" – Presented by Sylwester Latkowski, TU/e

An overview of research and development of an on-chip laser systems for use in gas sensing applications will be given. Novel geometry, widely tunable laser sources in a form of monolithic photonic integrated circuits realized using generic integration technologies will be presented. Feasibility of such lasers operating either in 1.5µm and 2µm wavelength bands for gas sensing will be demonstrated with experimental results obtained in absorption measurements of acetylene and carbon dioxide.

About Sylwester Latkowski Continue reading “"Photonic integration technology and devices for gas sensing (LWAVE-Tech)" – Presented by Sylwester Latkowski, TU/e”

"On-chip alignment of flexible optical waveguides" – Presented by Marcel Tichem, Delft University of Technology

The technology for the fabrication of Photonic Integrated Circuits (PICs) has advanced considerably over the past decades. New generations of photonic packages integrate multi-port PICs from different material platforms to provide more functionality and performance. The assembly and packaging of these devices has become the major cost driver in manufacturing.

The most critical step in photonic packaging is the precision alignment (±0.1μm) of the components and waveguides. We propose a concept and designs where MicroElectroMechanical System (MEMS) functionality is integrated with one of the chips in the package to take care of the fine-alignment of flexible waveguide beams.

About Marcel Tichem Continue reading “"On-chip alignment of flexible optical waveguides" – Presented by Marcel Tichem, Delft University of Technology”

"High accuracy deformation measurement employing photonic integrated circuits" – Presented by Iwan Akkermans, ASML

In advanced lithography tools, sub-nanometer positioning accuracy is required. Small deformations can affect machine performance and need to be monitored. Therefore ASML is developing high accuracy deformation sensors employing photonic IC technology.

About Iwan Akkermans Continue reading “"High accuracy deformation measurement employing photonic integrated circuits" – Presented by Iwan Akkermans, ASML”

"Process control modules for photonic integrated circuits" – Presented by Dzmitry Pustakhod, Eindhoven University of Technology

Photonic integrated circuits are nowadays available through multi-project wafer runs that are carried out at various foundries. In this novel approach complex photonic ICs are designed using building blocks with guaranteed performance. Process control modules (PCMs) provide foundries the means to test performance parameters of the building blocks and assess the fabrication process. The PROCON STW project has developed a number of such PCMs. In the presentation we will review the results.

About Dzmitry Pustakhod
Continue reading “"Process control modules for photonic integrated circuits" – Presented by Dzmitry Pustakhod, Eindhoven University of Technology”

"Using PICs to bring long reach telecom technologies to the end user" – Presented by Boudewijn Docter, EFFECT Photonics

Optical fiber technology was originally deployed to cover long distances between continents. Because these submarine cables are expensive to deploy, advanced technologies were developed to use the fiber bandwidth as efficient as possible. The high cost of these new technologies were shared among all users of the back-bone connections. With the development of novel PIC technology, these advanced technologies become a lot more affordable. Today PIC technology is appearing in medium and short range communication links, all the way down to the end user. This is an appealing business for product companies as well as the foundry businesses behind it.

About Dr. Ir. Boudewijn Docter Continue reading “"Using PICs to bring long reach telecom technologies to the end user" – Presented by Boudewijn Docter, EFFECT Photonics”

"Photonic ICs for medical applications" – Presented by Ton van Leeuwen, University of Amsterdam

OCT is an increasingly important biomedical imaging modality, creating high resolution imaging of scattering tissues. The use of PICs can reduce the size as well as the costs of the OCT system. Thereto, various components have to be integrated and newly designed. The use of PICs can also facilitate other measuring methods and optical schemes, which consequently can improve the functionality of PIC-based OCT systems compared to those based on bulk optical components. Lowering the costs of OCT device costs opens up new application areas of OCT, for example in forensic sciences, biometrics, and industrial applications.

About Ton van Leeuwen Continue reading “"Photonic ICs for medical applications" – Presented by Ton van Leeuwen, University of Amsterdam”