Jan, 19, 2017 - Caleb Christensen

Click to Signup Location: MIT Lincoln Laboratory, 3 Forbes Road, Lexington, MA 02420
Dinner Reservation Deadline: January 16, 2017 @ 6pm

Photons over electrons: Optical Fiber Sensors For Measuring Small Signals In Harsh Environments

Joint Meeting with Boston Chapter, IEEE Photonics Society

Optical fibers can be used to create high performance sensors because of several advantages that optical systems can provide over electronics.  For example, the precision of optical interferometry in measuring sub-nanometer displacements allows for measurements of very small physical changes, while immunity to electromagnetic interference and very low signal attenuation allows for high fidelity transmission of analog signals over long distances in challenging environments.  MagiQ Technologies develops different types of optical sensors; in this talk, I will focus on a highly rugged, remotely interrogated seismic sensor.  Such a device can provide accurate knowledge of geophysical processes in harsh environments where electronic sensors quickly fail or require frequent maintenance, such as oil and gas reservoirs or geothermal power systems.  In addition, large numbers of sensors can be connected via fiber optic cables in very long arrays without active elements, where a conventional electronic approach requires costly amplifiers, digitizers, and data handling hardware distributed throughout the array.  Although general operating principles and potential sensor performance are relatively well established, there are many challenges to design and produce a sensor system in a cost-effective, reliable, and scalable way.

Caleb Christensen, MagiQ Technologies

Dr. Caleb Christensen, chief scientist at MagiQ Technologies, specializes in optical systems and signal processing.  He received his B.S. in physics from Iowa State University, and received his Ph.D in experimental physics at the Massachusetts Institute of Technology studying optical and atomic interactions in ultracold gases.   He has been at MagiQ since 2011, where he has performed research and engineering on multiple projects related to optical sensing, and searches for new applications of precision optical systems in defense, security and industry.


Dinner & Meeting reservations must be made by  Monday at 6 PM, January 16, 2017.  We can no longer accept dinner reservations after this cutoff.
Meeting-Only registrations are appreciated by Wednesday January 18, 2017 the day before the meeting.  Walk-ins are acceptable for the meeting-only.

Please make online reservations via the "Click to sign up" button above.

Reservations may also be left on the answering machine at (617) 454-4693. We no longer have an email address for reservations due to SPAM.

When making reservation requests, please provide the following information:

  • DINNER AND MEETING or meeting only
  • Name(s) and membership status
  • Daytime phone number where you can be reached (in case of change or cancellation)


MIT Lincoln Laboratory
3 Forbes Road
Lexington, MA 02420

(Map to MIT Lincoln Laboratory)

Networking—5:45 PM, Dinner—6:45, Meeting—7:30 PM.


Vegetarian option available on request

Dinner Prices:

   Register on/before
 DINNER Reservation Date 
 Late Reservations
Based on Availability
 NES/OSA Members and their guests   $30.00 each   $35.00 
 Non-members   $35.00 (See NOTE Below)   $40.00 
 Students   $5.00   $5.00 
 Post-Docs   $15.00   $15.00 









NOTE: The NES/OSA has not changed dinner prices in several years but has been facing higher costs. We have increased the cost of dinner by $5 this year. We will try to accommodate late reservations but cannot not guarantee that a meal will be available.

General Information on NES/OSA Meetings

Cancellations and No-shows:

If the meeting must be cancelled for any reason, we will try to call you at the phone number you leave with your reservation. Official notice of cancellation will be on our answering machine.

We have to pay for the dinners reserved as of the Tuesday before the meeting, so no-shows eat into our cash reserve. If you will not be able to attend, please let us know as early as possible. Otherwise, no-shows will be billed.

Membership Rates:

Regular members $15.00
Student members free




NOTE: The extra $5.00 of the non-member dinner fee can be used toward membership dues if the nonmember joins and pays dues for the current year at the meeting.