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Optoelectronic Systems

Integrated-optical devices - made by Jenoptik

DI_IO-Technology 6-12-short.ppt 2006-06-16 Jenoptik Laser, Optik, Systeme GmbH 2

Integrated-optical devices - made by JenoptikLight modulators

Integrated-optical modulators Liquid crystal spatial modulators


Integrated-optical devices - made by JenoptikContent

� Introduction: Integrated Optics

� First main application: Optical telecommunication

� Second main application: rotation sensor

� New challenges

� Modulators of JENOPTIK Optical Systems GmbH


Integrated-optical devices - made by JenoptikIntroduction: Integrated optics

Optics of guided light waves in planar substrates

Fiber optics:cylindrical waveguideCore diameter 3-9 µm

Integrated optics:Waveguide in a planar substrateWidth / depth 3-9 µm

� Singlemode / Multimode� various basic structures� various materials and manufacturing processes

Core

Cladding

waveguide

substrate

Light transmission


Integrated-optical devices - made by JenoptikFirst main application: Optical telecommunication

wavelength: about 1550 nmBitrate: 10-40 Gbit/s

Data source

sender modulator multiplexer fiber amplifier coupler

switchWavelengthconverter

demultiplexerreceiverdecoderData drain

Channel number: ITU-grid 100 GHz (0,8 nm)Optical power: some milliwatts per channel


Amplitude modulatorPhase modulator

Linear electrooptic effect in LiNbO3 ∆n n r Ez z z= − 1

23

33

∆ Γφ πλ

= − Ln r

U

gz3

33 P PU

Umax= +

1

2

1

2cos

ππ

Ug

n r Lzπ

λ= −3

33 Γ

First main application: Optical telecommunicationElectrooptic modulation


� wavelength app. 1550 nm

� some milliwatts

� 10 – 40 Gbit/s

� extinction < 100:1

First main application: Optical telecommunicationElectrooptic modulation


Integrated-optical devices - made by JenoptikSecond main application: rotation sensor (optical gyroscope)

ωωωω

Sagnac-Effect

Φ =8

0

πλ

ωA

cΦ =

2

0

πλ ω

l d

c

example: λ0 = 850 nm, l = 1000 m, ω = 1 °/h Φ = 1,2 x 10-5 rad

Phase shift:

Measure: ( )II

= +0

21 cosΦ

Largest signal change at Φ = π/2

Phase modulation corresponding to light round trip

worlds best accuracy: 0,05°/h

Fiber coil

detector laser


Integrated-optical devices - made by JenoptikNew challenges

DLR

� Phase modulator;

� λ = 1064 nm;

� optical power 0,5 W cw

� 10 GHz

High power

Intersatellite communication


Laserzentrum Hannover

Short pulses


Precision material processing usingfiber-based oscillator-amplifier systems

� Amplitude modulator;

� λ = 1064 nm;

� fs-pulses 100 mW avg, >100 W per pulse pulse shaping from cw: 0,5 W

� 1 GHz



LDT

Short wavelengths

Display and printing technology

� Amplitude modulator;

� RGB;

� 5 mW cw

� 100 MHz


Phase modulator

Modulated Y-branch

Amplitude modulator

Focus: Non-Standard wavelengths, comparably high power, customized design

Modulators of JENOPTIK Optical Systems GmbH


Modulators of JENOPTIK Optical Systems GmbH Amplitude modulator

AM532 AM635 AM830 AM1060 AM1550

Wavelength 532 nm 635 nm 830 nm 1060 nm 1550 nmOther wavelengths on request

Spectral bandwidth ±10 nm ±20 nm ±40 nm ±60 nm ±100 nm

Insertion loss, typical 7 dB 7 dB 6 dB 5 dB 5 dB

Extinction, typical 200:1 500:1 800:1 1000:1 1000:1

Minimum optical rise time, typical 1 ns 200 ps 200 ps 200 ps 200 ps

Optical interface, inputStandard Polarization maintaining singlemode fiberFiber termination Bare fiber, FC/PC- or FC/APC-connector

Optical interface, outputStandard Polarization maintaining singlemode fiberoptional Singlemode- or multimode fiberFiber termination Bare fiber, FC/PC- or FC/APC-connector

Half wave voltage, typical 2 V 3 V 3 V 3 V 5 V

Maximum optical input power (cw) 10 mW 30 mW 50 mW 300 mW 300 mW

dimensions 96 mm x 19 mm x 10 mm(housing LxWxH, without fiber throughput)

Technical data


Modulators of JENOPTIK Optical Systems GmbH Phase modulator

PM532 PM635 PM830 PM1060 PM1550

Wavelength 532 nm 635 nm 830 nm 1064 nm 1550 nmOther wavelengths on request

Spectral bandwidth ±15 nm ±20 nm ±40 nm ±60 nm ±100 nm

Insertion loss, typical 7 dB 6 dB 5 dB 4 dB 3 dB

Minimum optical rise time, typical 1 ns 200 ps 200 ps 200 ps 200 ps

Optical interface, inputStandard Polarization maintaining singlemode fiberFiber termination Bare fiber, FC/PC- or FC/APC-connector

Optical interface, outputStandard Polarization maintaining singlemode fiberoptional Singlemode- or multimode fiberFiber termination Bare fiber, FC/PC- or FC/APC-connector

Half wave voltage, typical 4 V 6 V 6 V 6 V 10 V

Maximum optical input power (cw) 10 mW 30 mW 50 mW 300 mW 300 mW

dimensions 96 mm x 19 mm x 10 mm(housing LxWxH, without fiber throughput)

Technical data


Modulators of JENOPTIK Optical Systems GmbHTechnology

- waveguide patterning- ion exchange in LiNbO3

- electrode patterning- sawing, polishing- fiber coupling- packaging


Modulators of JENOPTIK Optical Systems GmbH Application: Generation of short pulses

Rise time < 500 ps, extinction > 1000:1

-0.5

0

0.5

1.0

1.5

2.0

2.5

-30 -20 -10 0 10 20 30 40-0.005

0

0.005

0.010

0.015

0.020

0.025

optical signaltrigger signal

time (ns)

volta

ge (

V)

optic

al p

ower

(a.

u.)


Modulators of JENOPTIK Optical Systems GmbH Application: Pulse shaping

Rise time < 500 ps, extinction > 1000:1

-0.2

0

0.2

0.4

0.6

0.8

1.0

1.2

-400 -200 0 200 400 600 800

time (ns)

optic

al p

ower

(a.

u.)


Modulators of JENOPTIK Optical Systems GmbH Application: Pulse picker

150 fs-Pulses, λ = 1064 nm, 76 MHz, 100 mW avg. Rise time < 5 ns, extinction 1000:1

0

1

0

1

0 200 400 600 800 1000 1200

Laser pulse chainEvery 47th pulse is transmitted

time (ns)

optic

al p

ower

(a.

u.)


Modulators of JENOPTIK Optical Systems GmbHApplication: Sensors

Potential free electric field sensor

mV … MV, dc … 5 GHz, 1000:1


Modulators of JENOPTIK Optical Systems GmbHApplication: scanning display technique

Film- and Photo technology

Amplitude modulation, λ = 473, 532, 670 nm 100 Millions Pixel/Sec. (> 1 GHz Sinus)extinction: 1000:1 Pout < 5 mW

Miniaturized light source

Laser scanning microscope,Measurement techniquePulsed laser sources IR & VIS

Paper feed Photo paper

Line deflection

Beam combination

ModulationLasersRed green blue


Modulators of JENOPTIK Optical Systems GmbHApplication: Phase modulation

Interferometric Measurementtechnique� sweeping of reference wave� vibrometer, anemometer� coherence tomography

Fine tuning of laser lines� atomic cooling – example 637 nm,

795 nm … 5 GHz

Optical free space communication� space-communication – 1064 nm� 500 mW, 5 GHz

Laser

IOC

Messobjekt

© Dantec

Kamera

Auswerteelektronik

objectcamera

laser

Control unit


Thank you for your attention!

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