Dr. Thomas G. Giallorenzi Profile

Dr. Thomas G. Giallorenzi

retired at retired

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 24 June 2014 Paper

Folded path LWIR system for SWAP constrained platforms

Erin Fleet, Michael Wilson, Dale Linne von Berg, Thomas Giallorenzi, Barry Mathieu

Proceedings Volume 9070, 907029 (2014) https://doi.org/10.1117/12.2050503

KEYWORDS: Mirrors, Sensors, Modulation transfer functions, Long wavelength infrared, Cameras, Geometrical optics, Imaging systems, Optical design, Aspheric lenses, Aluminum

Read Abstract +

Folded path reflection and catadioptric optics are of growing interest, especially in the long wave infrared (LWIR), due to continuing demands for reductions in imaging system size, weight and power (SWAP). We present the optical design and laboratory data for a 50 mm focal length low f/# folded-path compact LWIR imaging system. The optical design uses 4 concentric aspheric mirrors, each of which is described by annular aspheric functions well suited to the folded path design space. The 4 mirrors are diamond turned onto two thin air-spaced aluminum plates which can be manually focused onto the uncooled LWIR microbolometer array detector. Stray light analysis will be presented to show how specialized internal baffling can be used to reduce stray light propagation through the folded path optical train. The system achieves near diffraction limited performance across the FOV with a 15 mm long optical train and a 5 mm back focal distance. The completed system is small enough to reside within a 3 inch diameter ball gimbal.

Proceedings Article | 14 September 1994 Paper

Evolution of optical fibre sensor technology

Thomas Giallorenzi

Proceedings Volume 2360, (1994) https://doi.org/10.1117/12.184957

KEYWORDS: Sensors, Optical fibers, Sensor technology, Interferometry, Laser applications, Fiber optics sensors, Gyroscopes, Telecommunications, Sensor performance, Light emitting diodes

Read Abstract +

Several types of optical fibre sensors have been successfully developed into commercial products and a strong technology base has been realised to foster the development of new types of fibre sensors. In this talk, we will describe briefly the technical status of the field as of the first OFS which was held in 1983 and trace the evolution of the field (both components and concepts) and its commercialisation through the last decade. The component base developed for optical fibre sensors has found applications well beyond the sensor field and this will be examined. For example, single mode couplers developed for interferometric sensors are now being routinely used by the telecommunications industry. Low noise single mode laser studies conducted for high performance sensors also laid the foundation for many later noise studies of lasers for CATV, and single mode direct and coherent communication applications. The development of sources for fibre gyros led to the development of a new class of optical sources i.e. superluminescent diode and fibre lasers. The technology of interferometric sensor demodulation proceeded similar work for coherent communications and the pioneering studies in sensor multiplexing in its many forms has also been applied to CATV and FTTC applications. The successes by the fibre sensor community in the development of componentry however has not yet been matched with an equal success in commercialisation. Interferometric sensors such as the fibre gyro and intensity based sensors such as temperature, pressure, etc. have been successfblly marketed; however commercialisation in general has not met everyone's hopes or expectations. In this talk we will briefly also review the market growth projection made at the time of the first OFS and discuss what people project today.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years