© ra2studio dreamstime.com Analysis | June 13, 2018
Multiple lasers could be replaced by a single microcomb
Every time we send an e-mail, a tweet, or stream a video, we rely on laser light to transfer digital information over a complex network of optical fibers. Now, researchers at Chalmers University of Technology in Sweden, say that all these can be replaced by a single device.
Dozens of high-performance lasers are needed to fill up the bandwidth and to squeeze in an increasing amount of digital data. Researchers have now shown that all these lasers can be replaced by a single device called a microcomb. A microcomb is an optical device that generates very sharp and equidistant frequency lines in a tiny microphotonic chip. This technology was developed about a decade ago and is now reaching a maturity level that enables new applications, including lidar, sensing, timekeeping and of course optical communications, a press release reads. The soul of a microcomb is a tiny optical cavity that confines laser light in space. Therefore, this technology provides a fantastic playground to explore new nonlinear physical phenomena. These conditions have now been utilised by researchers at Chalmers University of Technology, Sweden, in cooperation with researchers at Purdue University, USA. Victor Torres Company, Associate Professor at Chalmers, is one of the authors of a paper that was recently published in the journal Nature Communications. “We observed that the optical frequencies of the microcomb interfered destructively over a short period of time, thus providing the formation of a wave inside the cavity that resembled a ‘hole’ of light. The interesting aspect of this waveform is that it yielded a sufficient amount of power per frequency line, which was essential to achieve these high-performance experiments in fiber communication systems”, says Victor Torres Company. The physical formation of these “dark” pulses of light is far from being fully understood, but the researchers believe that their unique properties will enable novel applications in fiber-optic communication systems and spectroscopy. “I will be able to explore these aspects thanks to the financial support of the European Research Council (ERC)”, says Victor Torres Company in the release. “This is a bright start to better understand the formation of dark pulses in microresonators and their potential use in optical communications. The research could lead to faster and more power-efficient optical communication links in the future.” The results are the fruit of a collaborative effort between researchers at the School of Electrical and Computer Engineering at Purdue University, who fabricated the samples, and the group of Professor Peter Andrekson at the Photonics Laboratory at Chalmers, which hosts world-class experimental facilities for fiber-optic communications research. “Our findings do not represent the first demonstration of a microcomb in fiber communications, but it is the first time that the microcomb has achieved a performance compatible with the strong demands of future communication systems”, says Peter Andrekson, who is also one of the co-authors of the paper. The main author is Attila Fülöp, who defended his doctoral thesis Fiber-optic communications with microresonator frequency combs at the Photonics Laboratory in April. “Working with the microcomb and this experiment has been a great experience. This proof-of-concept demonstration has allowed us to explore the requirements for future chip-scale data transmitters while at the same time proving the potential of this very exciting dark pulse comb technology”, he says.
NCAB appoints Peter Kruk as new CEO Following the announcement late last year that Hans Ståhl planned to retire in 2020, the board of NCAB Group has now found his successor. Peter Kruk will be taking over as the new CEO of the PCB supplier.
Comtech Telecomm Corp. issues business update New York-based Comtech Telecommunications Corp. has issued a statement on the withdrawal of its business outlook for its fiscal year ending July 31, 2020, as well as an update on its proposed purchase of the Gilat Satellite Networks Ltd.
Xerox provides HP acquisition update Xerox has issued a statement regarding its earlier proposal to buy HP Inc.
As Samsung Display exits the LCD market a major reshuffle is expected According to the latest investigations by the WitsView research division of TrendForce, the oversupply of TV panels in 2019 resulted in a major price drop. As such, panel manufacturers hoped to utilise their excess capacity in 2020 through increasing their production of monitor panels, with Samsung Display (SDC) having the most extensive plans.
Swedish PCB manufacturer updates machine park PCB manufacturer MMAB’s factory in the south of Sweden recently got a new drilling area with updated machines.
Ventec races to build up regional inventories to fight COVID-19 The electronics industry is playing a major role in supporting increased requirements for critical medical devices during the current COVID-19 pandemic. And with that an increase in demand of the building blocks is to be expected.
Elmatica sees a spike in demand - responds with growth in staff Growing demand, new customers and an increase in business within knowledge intensive industries, has reinforced the need for another Country Manager in Poland, a new Technical Manager and an additional resource in the Customer Service Department.
Co-operation negotiations completed at Etteplan Etteplan initiated co-operation negotiations on March 18th 2020 due to temporary changes in customer demand caused by the COVID-19 pandemic. Now, the negotiations have come to a complete.
Indian electronics company support the fight against COVID-19 Indian engineering and technology solutions company, Cyient, says it’s received clearance for its Mysore facility to run its MedTech manufacturing lines to support the production of medical equipment critical in the fight against COVID-19
Tesvolt kickstarts production at new German factory Semi-automated production began today in Europe’s first gigafactory for commercial battery storage systems, located in Wittenberg, Germany.
Global semiconductor materials market revenues slip 1.1% in 2019 Global semiconductor materials market revenues edged down 1.1% in 2019, SEMI reported in its Materials Market Data Subscription (MMDS).
Cirexx Int’l posts COVID-19 update Santa Clara, California-headquartered Cirexx International has released a statement penned by President and CEO Philipp Menges concerning status of operations during the coronavirus pandemic.
Abbott gets OK for fast, portable COVID-19 test Abbott has been granted emergency use authorization (EUA) from the U.S. Food and Drug Administration (FDA) for a rapid molecular point-of-care test for the detection of novel coronavirus (COVID-19).
COVID-19 limits viability for AT&S Considering current events and the effects that the global pandemic is having on logistics and production chains worldwide, AT&S is preparing itself for a decline in demand in some of its customer segments.
Neways provides update on COVID-19 impact The EMS provider says it has taken various measures to limit the risks to the health of its employees, as well as its clients and suppliers. In addition, the company has taken measures to safeguard business continuity.
Samsung Display plans to stop all LCD production in 2020 The South Korean company has reached the decision to end all of its production of LCD panels in its home country and in China by the end of 2020.
Orbit One updates machine park with new selective soldering machine Swedish EMS provider, Orbit One, has invested in a new ERSA selective soldering machine for the production unit in Ronneby, Sweden.
ZOLL pivots to focus on volume for ventilator production Massachusetts-based ZOLL Medical Corporation has shot capacity up to 10,000 ventilators per month in response to the COVID-19 pandemic, representing a nearly 25-fold increase from normal volume production.
Computrol ramps output for ventilator production As the coronavirus pandemic continues its spread through the U.S., Idaho-based Computrol is joining a growing list of electronics manufacturers who are adjusting operations to support companies producing critical healthcare products.
ABB adding jobs, new distribution center in Arizona ABB has announced the creation of a new distribution center in Phoenix, in a move that will bring the company closer to Western U.S. distributors, contractors, industrial customers, and retailers.
8% growth in 2019 drives tenth consecutive year of EDA growth The Electronic System Design (ESD) Alliance Market Statistics Service (MSS) says that the Electronic Design Automation (EDA) industry revenue increased 2.2% for Q4 2019 to USD 2626.3 million, compared to USD 2570.1 million in Q4 2018.
Polestar 2 production begins in Luqiao, China Production of Polestar 2 has officially begun in Luqiao, China. The new electric performance fastback is the first electric vehicle to be produced by the facility.
Kimball Electronics updates on the impact of COVID-19 COVID-19 has disrupted the company’s global operations since its initial outbreak. While Kimball Electronics' facilities in China were initially adversely impacted, they have now resumed normal operations.
First Solar says that it's still operational First Solar says that its manufacturing operations will continue at each of the company’s Wood County, Ohio, Kulim, Malaysia and Ho Chi Minh City, Vietnam facilities at this timeLoad more news