PHYSICS CLUB ACTIVITIES

• Participation at Pittcon 2012 (March 2012).

• Manufacture of tapered fibers (Summer 2012).

• Measurements of light coupling into a tapered

optical fiber (Summer 2012).

• Installation of a liquid level sensor at Ballona

Wetlands (in conjunction with Loyola Marymount

University and Santa Monica Bay Restoration

Commission) (Summer/Fall 2012).

PHYSICS CLUB ACTIVITIES• Demonstration of different types of sensors

(NO3-, PO4

-3, K+, Ca++, Mg++, Liquid Level) (Fall

2012).

• Visit by Boeing representative Dr. Robert

Frampton (Fall 2012).

• Work on optical fiber colorimeter (Fall and Winter

2012)

• Attendance to the Winter meeting of the SCAAPT

at CSUN (Winter 2012).

PHYSICS CLUB ACTIVITIES

• Presentation to the LA Harbor Foundation

(Winter 2012).

• Semester end Karaoke nights (December 2012

and June 2013).

• Abstract submission and attendance to Pittcon

2013 (March 2013).

• Presentation at Brazil’s INEO conference (April

2013).

PHYSICS CLUB ACTIVITIES• Continuing work on the optical fiber

colorimeter (Spring through Fall 2013).

• Presentation of the work done by the Club at

several Brazilian universities (Summer 2013).

• Oral presentation and publication of an invited

paper in the SPIE meeting in San Diego (August

2013).

• Poster presentation and paper publication at the

SPIE meeting in San Diego (August 2013).

SIDE ILLUMINATED

OPTICAL FIBER

SIDE ILLUMINATED

OPTICAL FIBER

Fluorescent Absorption Scattering

1989

(1a)

2006

(1b)

2013

(1c)

2013

(1d)

2008

(1e)

2008

(1f)

TYPES OF SENSORS

Fluorescent Absorption Scattering

2013

(1g)

2012

(1h)

2013

(1i)

TYPES OF SENSORS

Cuvette

Bare fiber

core

• This technology is protected under several

US and foreign patents.

SENSORS DEMONSTRATED

Sensors Demonstrated Configuration ReversibleCl-, PO4

-3, K+ 1(a) Yes

Relative Humidity, Ca++, Mg++, NO3- 1(b) Yes

NO3- (visible), PO4

-3 1(e) No

NO3- (UV) 1(e) Yes

K+ (scattering) 1(f) No

Turbidity 1(f) Yes

NO3- 1(h) No

Food dyes 1(h) Yes

Liquid level Refractive Index Yes

SIDE ILLUMINATED OPTICAL

FIBER SENSOR• Distributed/multi point sensing easily accomplished.

• Can detect more than one parameter.

• High spatial resolution at low cost.

• High signal output.

• Simple detection system.

• Can be adapted to handle almost any optical sensing

configuration.

OPTICAL FIBER COLORIMETER

6V Battery

pack

Colorimeter

box

LED

driver

Photodiode

Cuvettes SMA

connector

Multimeter

OPTICAL FIBER COLORIMETER

Light

support

Fiber

support Optical

fiber

Light

dampener

PARTICIPATION AT PITTCON

MARCH 2013 (RESEARCH PAPER)

PARTICIPATION AT PITTCON

2013 (SHORT COURSE)

PARTICIPATION AT PITTCON

2012 IN ORLANDO, FL

LIQUID LEVEL SENSOR AT

BALLONA WETLANDS

Michael Matta

helping

installing the

liquid level

sensor in the

Ballona

wetlandsLiquid level

sensor

installed in

the Ballona

wetlands. This

sensor was

monitoring

the level of

the creek.

Liquid level

sensor

Liquid level

sensor

FIBER TAPERINGDelbert Lavezzari working

with fiber stretcher Robert Insley working

with fiber stretcher

Delbert Lavezzari and

Robert Insley working

with fiber stretcher

KARAOKE NIGHT AT THE ASTRO

KARAOKE IN LOMITA (12/2012) Delbert

Lavezzari

Paul

DelgadoLuis

Elias

Blanca

Paul

Delgado

Delbert

Lavezzari

Ray

Duenas

Princess

Ortiz

Luis

Elias

Delbert

Lavezzari

Paul

Delgado

Blanca

Blanca

Michael

Matta

Princess

Ortiz

Ray

Duenas

Blanca

Paul

Delgado

Delbert

Lavezzari

Ray

DuenasClaudio

Egalon

Optical fiber

support

Optical fiber

connector

Optical fiber

LED support

LEDs

Cuvettes with

samplesPhotodiode in

container

Optical fiber

support

Optical fiber

connector

Optical

fiberLED

support

LEDs

Cuvette support

Photodiode in

container

Cuvettes