search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
Page 6


www.us-tech.com


The Optical Future of Computing


Published By: Mid-Atlantic Tech Publications, Inc. Phoenixville, PA 19460 Established January, 1986


U.S. TechWorld HQ Advertising&Editorial Offices


U.S. Tech 10 Gay Street Phoenixville, PA 19460


Phone: Fax:


(610) 783-6100 (610) 628-3891


e-mail: mail@us-tech.com Web:


www.us-tech.com


Publisher and President: Jacob Fattal


Office Manager: Ruri Chandra


Editor Emeritus: Walter Salm


Editor: Michael Skinner


Art Director: Mike Swavola


Account Executive: Joseph Zummo


Cartoonist: Ted Goff


Copyright © 2020 Mid-Atlantic Tech Publications, Inc.


Contents not be reproduced or reprinted in any form without written permission from the publisher. Opinions expressed on Tech Op-Ed pages and by our columnists are the views of the person or persons authoring the material.


Shenzhen Office Room 2301-2302 Chuangshan Centre, No. 6007 Shennan Road, Futian District Schenzhen City, China Tel: 0755-61319388-136 Fax: 0755-83867058 E-mail: pcbsmt1997@163.com


China in


Advertising Sales Offices WELLINK


INTERNATIONAL


BUSINESS SERVICES, CO., LTD.


Hong Kong Office Unit 06, 13th Fl. Ricky Centre Mongkok, Kowloon, Hong Kong Tel: 852-311-16973 Fax: 852-311-16975 E-mail: pcbsmt1997@163.com


Continued from page 1


photonic transceivers for data cen- ters all around the world. Now, a collaboration between UC


Santa Barbara, Caltech and EPFL have made another revolutionary dis- covery in the field. The group man- aged to simplify and condense a com- plex optical system onto a single sili- con photonic chip. The achieve- ment significantly lowers the cost of production and allows for easy integration with tradition- al, silicon chip production.


Optical Frequency Combs “The entire internet is driv-


en by photonics now,” says John Bowers, director of UC Santa Barbara’s Institute for Energy Efficiency and leader of the col- laborative research effort. Despite the great success of


veals spikes and dips that resemble a hair comb — hence the name. Generating combs used to re-


quire bulky and expensive equip- ment, but this can be now managed using the recently emerged microres- onator-based soliton frequency combs, which are miniaturized fre- quency comb sources built on CMOS photonic chips. Using this “integrat-


July, 2020


photonics in the internet’s back- bone, there are still challenges. The explosion of data traffic also means growing requirements for the data rates that silicon photonic chip can handle. So far, the most efficient way to address this demand is to use multicolor laser lights to transmit in- formation. The more laser colors, the more information can be carried. But this poses a problem for inte-


Silicon nitride soliton microcomb chip device in a butterfly package with a fiber output.


ed photonics” approach, the team has developed the smallest comb genera- tor in the world, which essentially re- solves all these issues. The system is rather simple, con-


Web: www.pcbsmt.cn


grated lasers, which can generate on- ly one color of laser light at a time. “You might literally need fifty or more lasers in that chip for that pur- pose,” says Bowers. Using fifty lasers is expensive and inefficient in terms of power. Also, noise and heat can cause the frequency of light that each laser produces to fluctuate. Finally, with multiple lasers, the frequencies can even drift into each other, much like early radio stations did. A solution can be found in the


technology of “optical frequency combs,” which are collections of equally spaced frequencies of laser light. Plotting the frequencies re-


Assemble Batteries with High Power & High Storage Capacities


Advanced solutions for Electric Vehicles, Charging Stations, & Energy Storage Systems


Sonobond’s ultrasonic metal welders quickly and reliably weld up to 100 layers of anode and cathode foils – as thin as seven microns – to battery tabs and terminals, without tearing! They also easily weld the large wire bundles and HV terminals required for high power and high storage capacity batteries.


Using our patented Wedge-Reed System – with no external heat, current or fi llers – our


units create strong, solid-state, highly conductive welds, elimi- nating metallurgical defects such as porosity and intermetallics that commonly exist in fusion welds.


This System welds tinned and oxidized metals – a unique ability unmatched by any other ultrasonic system – as well as stranded copper wire bundles up to 100 sq.mm cross section.


Order Our Free Ultrasonic Welding Viability Test


It’s a “try before you buy” offer we’re happy to make! Visit our


website or call us to set it up for you.


sisting of a commercially available feedback laser and a silicon nitride photonic chip. “What we have is a source that generates all these colors out of one laser and one chip,” says Bowers. The simple structure means


small scale, less power, and lower cost. The entire setup now fits in a package smaller than a matchbox, with overall price and power con- sumption less than previous systems. The new technology is also much


more convenient to operate. Previ- ously, generating a stable comb had been a tricky endeavor. Researchers had to adjust frequency and power exactly right to produce a coherent soliton comb, and even then, the process was not guaranteed to gener- ate a comb every time. “The new ap- proach makes the process as easy as switching on a room light,” says Ker- ry Vahala, professor of applied physics and information science and technology at Caltech, where the new soliton generation scheme was dis-


Continued on page 8 Contents


Tech-Op-Ed ........................... 4 Tech Watch ........................... 10 People.................................... 12 Business News......................... 14 Business Briefs........................ 15 Management......................... 16 EMS .................................... 18 ElectronicMfg. Prods............. 24 Production............................ 40 Partnering............................. 42 Distribution........................... 44 New Products....................... 58 High-Tech Events................... 76 Editorial Calendar................. 76 Advertisers Index................... 78


800-323-1269 • 610-696-4710 • Fax 610-692-0674 • Web: www.SonobondUltrasonics.com • Email: Sales@SonobondUltrasonics.com © 2020 Sonobond Ultrasonics, Inc.


See us at the Int’l Battery Seminar & Exhibit in Orlando, July 27-30, Booth 101 Special Focus:


Production and Packaging...................................46


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80