Monday, December 1, 2014

TOMORROW! Seminar: "Self-phase modulation in lithium niobate waveguides" by Dr. Roland Schiek 12.2.14/11:00am-12:00pm/ CREOL 103

Seminar: "Self-phase modulation in lithium niobate waveguides" by Dr. Roland Schiek
Tuesday, December 2, 2014 11:00 AM to 12:00 PM
CREOL Room 103

Dr. Roland Schiek
Ostbayerische Technische Hochschule Regensburg
Regensburg, Germany

Abstract:
Self-phase modulation in lithium niobate waveguides with cascaded quadratic and cubic nonlinearities is characterized by comparison of amplitude and phase of input and output pulse envelopes and spectra. Cubic nonlinear susceptibility coefficients of lithium niobate were determined from the measured nonlinear phase shifts. 
In non-centrosymmetric crystals typical cubic nonlinear effects like soliton propagation, modulational instability and supercontinuum generation are observed at power levels well below the expected values corresponding to the cubic nonlinear susceptibility. Responsible is a cascading of the quadratic non-linearity which mimics the third-order nonlinearity. Often considered relevant only close to phase-matching of the quadratic mixing, it was recently pointed out that the cascaded nonlinearity dominates the third-order nonlinearity in a much wider range. The most basic experimental evidence of a cubic nonlinearity is self-phase modulation (SPM). The first measurements of SPM in pure cubic nonlinear fibers needed long interaction lengths and were performed only in the spectral domain. Therefore, the most distinguished characteristic of SPM, the similarity of the variation in time of both, the pulse intensity and the nonlinear phase shift were not observed directly. With a measurement of the complex pulse envelope of pulses propagating in lithium niobate (LiNbO3) waveguides in addition to spectral measurements a complete characterization of SPM was performed in only cm-long samples. The contribution of different orders of the dielectric nonlinearity to the non-linear refraction could be identified and separated for a wide phase-mismatch range because the cubic nonlinearity is independent of the phase-mismatch in contrast to the changing cascaded quadratic nonlinearity. For specific geometries the cascaded nonlinearity dominates the cubic nonlinearity also far from phase-matching. By comparing quadratic and cubic contributions important elements of the cubic nonlinear susceptibility tensor of lithium niobate at wavelengths of 1.32mm and 1.55mm were determined.

For additional information:
Dr. Demetrios Christodoulides

407-882-0074

Friday, November 21, 2014

TODAY! Seminar: "Novel femtosecond lasers for driving attosecond generation" by Dr. Zhiyi Wei 11.21.14/11:00am-12:00pm/ CREOL 103

Seminar: "Novel femtosecond lasers for driving attosecond generation" by Dr. Zhiyi Wei
Friday, November 21, 2014 11:00 AM to 12:00 PM
CREOL Room 103

Zhiyi Wei
Institute of Physics, Chinese Academy of Sciences

 Abstract
Development of femtosecond lasers operating at new wavelengths has attracted great attention for increasing photon energy and flux of attosecond pulses. We have generated isolated 160 as pulses with carrier envelope phase controlled sub-5 fs laser at 800nm. In this talk I will introduce our recent works on laser frequency extension. By using 4H-SiC as the nonlinear crystal in femtosecond OPA experiment, 17 mJ pulses centered at 3.7mm were obtained. Choosing BBSAG as the nonlinear crystal in sum frequency generation, high conversion efficiency at 200 nm was achieved. These light sources can be used as attosecond driving lasers.

 Biography
Dr. Zhiyi Wei was born in Gausu Province, China in 1963. He obtained Ph.D Degree from Xian Institute of Optics and Fine Mechanics, Chinese Academy of Sciences in 1991. After two years postdoctoral fellow at Ultrafast Laser Spectroscopy Lab at Sun Yat-Sen University in China, he worked at the Rutherford Appleton Lab in UK, the Chinese University of Hong Kong, the Hong Kong University of Science and Technology, University of Groningen in the Netherland as a visiting scholar from May 1993 to March 1997. He joined the Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences in 1997. From April 2000 to Sept 2002, he was also employed by the National Institute of Advanced Industrial Science and Technology (AIST) in Japan as a NEDO fellowship researcher. His research interests focus on the generation, phase control, amplification and compression of femtosecond laser pulses. Presently he is the group leader of Ultrafast Laser Group at the Institute of Physics, Chinese Academy of Sciences. He is also the international advisory member of the IoP journal for Measurement Science and Technology, member of C2 (Symbol and Constants) sub-committee of International Union of Pure and Applied Physics (IUPAP).

For additional information:
Dr. Zenghu Chang

407-823-4442

TODAY! Seminar "Space-Division Multiplexed Transmission over Few-Mode-Fiber" by Dr. Nicolas Fontaine 11.21.14/2:00-3:00pm/ CREOL 103

Seminar "Space-Division Multiplexed Transmission over Few-Mode-Fiber" by Dr. Nicolas Fontaine
Friday, November 21, 2014 2:00 PM to 3:00 PM
CREOL Room 103

Dr. Nicholas Fontaine
Bell Laboratories
Crawford Hill, NJ

Abstract
Space-division multiplexed (SDM) systems use the multiple spatial modes in either multi-core fiber (separated modes), or the spatially overlapping but orthogonal modes in few-mode fibers to either increase the capacity or photon-efficiency of fiber links.The new challenges in SDM are how to couple into and out of the various SDM fibers without insertion loss (IL) or mode-dependent loss (MDL), and building components that have comparable performance to, and that offer a cost advantage over systems using multiple single-mode fibers.  I will show several components for space-division multiplexing in few-mode fibers including "photonic lantern" spatial multiplexers which are lossless adiabatic single-mode to multi-mode converters, and wavelength selective switches for routing signals in few-mode fiber. These components enable transmission of signals across multi-mode fiber using up to 12 spatial and polarization modes.

Biography
Nicolas Fontaine obtained his Ph. D. in 2010 at the University of California, Davis in the Next Generation Network Systems Laboratory [http://sierra.ece.ucdavis.edu] in Electrical Engineering. In his dissertation he studied how to generate and measure the amplitude and phase of broadband optical waveforms in many narrowband spectral slices. Since June 2011, he has been a member of the technical staff at Bell Laboratories at Crawford Hill, NJ in the advanced photonics division.  At Bell Labs, he develops devices for space-division multiplexing in multi-core and few mode fibers, builds wavelength crossconnects and filtering devices, and investigates spectral slice coherent receivers for THz bandwidth waveform measurement. Nicolas Fontaine has been author or co-author on over 100 publications, including several post-deadline and invited papers at OFC, ECOC, and CLEO.

For additional information
Dr. Rodrigo Amezcua

407-823-6853

Tuesday, November 18, 2014

LightPath Technologies to Present at LD Micro Conference on December 2nd


FOR IMMEDIATE RELEASE:


LightPath Technologies to Present at LD Micro Conference on December 2nd



ORLANDO, FL -- November 18, 2014 -- LightPath Technologies, Inc. (NASDAQ: LPTH) (“LightPath”, the “Company” or “we”), a global manufacturer, distributor and integrator of proprietary optical components, infrared lenses and high-level assemblies, announced today that Jim Gaynor, President and Chief Executive Officer, will present at the LD Micro investor conference on Tuesday, December 2, 2014 at 4:00 PM PST/7:00 PM EST.


"We are honored to have LightPath Technologies present at the Main Event this year." stated Chris Lahiji, Founder of LD Micro.


About LD Micro

LD Micro is an investment newsletter firm that focuses on finding undervalued companies in the micro-cap space. Since 2002, the firm has published reports on select companies throughout the year. The firm also hosts the LD Micro Invitational. It is a non-registered investment advisor. For more information, please contact 408-457-1042 or visit www.ldmicro.com.


About LightPath Technologies
LightPath manufactures optical products including precision molded aspheric optics, GRADIUM® glass products, proprietary collimator assemblies, laser components utilizing proprietary automation technology, higher-level assemblies and packing solutions. The Company's products are used in various markets, including industrial, medical, defense, test and measurement and telecommunications. LightPath has a patent portfolio that has been granted or licensed to it in these fields. For more information visit www.lightpath.com.
This news release includes statements that constitute forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, including statements regarding our ability to expand our presence in certain markets, future sales growth, continuing reductions in cash usage and implementation of new distribution channels. This information may involve risks and uncertainties that could cause actual results to differ materially from such forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, factors detailed by LightPath Technologies, Inc. in its public filings with the Securities and Exchange Commission. Except as required under the federal securities laws and the rules and regulations of the Securities and Exchange Commission, we do not have any intention or obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.  


Contacts:
Jim Gaynor, President & CEO
LightPath Technologies, Inc.
Tel: 407-382-4003

Dorothy Cipolla, CFO
LightPath Technologies, Inc.
Tel: 407-382-4003 x305

Jordan Darrow
Darrow Associates, Inc.
Tel: 631-367-1866


Saturday, November 15, 2014

SPIE Start-up Challenge at Photonics West - DEADLINE APPROACHING - DECEMBER 1st

Are you a Florida company or start-up that might be interested in an opportunity to pitch their company for cash prices in front of VC's and industry leaders?

http://spiestartup2015.istart.org/

The SPIE Start-up Challenge for photonics technology is held annually at the Photonics West conference in San Francisco. This competitive event invites new entrepreneurs to pitch their light-based technology business plan to a team of business development experts and venture capitalists. Applicants selected to pitch at Photonics West are invited to attend an entrepreneur boot camp for training, networking, and refining their business plan. The best pitch presenters receive cash prizes and are provided support to attend additional entrepreneurship training to continue refining ideas and make further contacts with experts.

Applications are due by 1 December.

Wednesday, November 12, 2014

Seminar "Space-Division Multiplexed Transmission over Few-Mode-Fiber" by Dr. Nicolas Fontaine 11.21.14/2:00-3:00pm/ CREOL 103

Seminar "Space-Division Multiplexed Transmission over Few-Mode-Fiber" by Dr. Nicolas Fontaine
Friday, November 21, 2014 2:00 PM to 3:00 PM
CREOL Room 103

Dr. Nicholas Fontaine
Bell Laboratories
Crawford Hill, NJ

Abstract
Space-division multiplexed (SDM) systems use the multiple spatial modes in either multi-core fiber (separated modes), or the spatially overlapping but orthogonal modes in few-mode fibers to either increase the capacity or photon-efficiency of fiber links.The new challenges in SDM are how to couple into and out of the various SDM fibers without insertion loss (IL) or mode-dependent loss (MDL), and building components that have comparable performance to, and that offer a cost advantage over systems using multiple single-mode fibers.  I will show several components for space-division multiplexing in few-mode fibers including "photonic lantern" spatial multiplexers which are lossless adiabatic single-mode to multi-mode converters, and wavelength selective switches for routing signals in few-mode fiber. These components enable transmission of signals across multi-mode fiber using up to 12 spatial and polarization modes.

Biography
Nicolas Fontaine obtained his Ph. D. in 2010 at the University of California, Davis in the Next Generation Network Systems Laboratory [http://sierra.ece.ucdavis.edu] in Electrical Engineering. In his dissertation he studied how to generate and measure the amplitude and phase of broadband optical waveforms in many narrowband spectral slices. Since June 2011, he has been a member of the technical staff at Bell Laboratories at Crawford Hill, NJ in the advanced photonics division.  At Bell Labs, he develops devices for space-division multiplexing in multi-core and few mode fibers, builds wavelength crossconnects and filtering devices, and investigates spectral slice coherent receivers for THz bandwidth waveform measurement. Nicolas Fontaine has been author or co-author on over 100 publications, including several post-deadline and invited papers at OFC, ECOC, and CLEO.

For additional information
Dr. Rodrigo Amezcua

407-823-6853

Workshop for Two-Year College Faculty and Staff Interested in Optics & Photonics Technician Education - December 10, 2014 in Farmington, CT - Register Today!

OP-TEC

Please join us for a Workshop on
Optics and Photonics Technician Education!
December 10, 2014
Tunxis Community College
Farmington, Connecticut
Workshop hosted by OP-TEC and Camden County College


Workshop Information:
This workshop will provide an opportunity to get in on the ground floor in educating technicians for one of the most exciting and fastest growing technologies - PHOTONICS! 

Optics and photonics applications are rapidly transforming the way we work and live. Photonics, and its applications, involve the cutting-edge use of lasers, optics, fiber-optics, sensors, cameras, and electro-optical devices.  Photonics has many applications in manufacturing, medicine, aerospace, communications, security, solid-state lighting, and other high-tech fields.  Thus it represents a broad, commercially viable area in which American employers require a steady supply of well-qualified technicians.

This regional national workshop is targeted to community and technical college faculty, staff, and administrators, as well as industry/workforce trainers.  While this workshop will be focused on photonics in the Northeast/New England region, the concepts will be applicable and interesting to educators nationwide.  Participants will be provided information on the growing need for photonics technicians and postsecondary programs to educate them.  OP-TEC staff will explain the opportunities for attendees to create new AAS programs in photonics and/or to infuse optics and photonics instruction into existing technical programs in technologies that are enabled by photonics.  Attendees will also learn about OP-TEC materials and services available for planning and implementing photonics education at their institutions.  Please visit our website for more details and to register today!

Date:  Wednesday, December 10, 2014  (10:00 AM - 3:00 PM)

Location:  Tunxis Community College, Farmington, CT

Intended Audience:
  Community and Technical College Faculty, Staff, & Administration (and representatives from their feeder high schools); and Industry/Workforce Trainers to learn about courses, materials, and educational/training opportunities sponsored by OP-TEC.

Cost:  No registration fees!  Space is limited and registration is required.  Lunch will be provided both days of the workshop.  Participants are responsible for lodging, meals, and all travel expenses.
A $200.00 travel stipend will be available for the first 15 colleges that register and attend.
Registrants will receive an information packet via email containing hotel and travel information.
 


  

NSFNSF/ATE National Center of Excellence