TECHNOLOGIE

ModBox 850 nm 28 Gb/s NRZS800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

Delivering Modulation Solutions
ModBoxThe ModBox-850nm-28Gbps-NRZ is an optical modulation unit that generates
high performance NRZ optical data streams at 850 nm. The equipment
incorporates a modulation stage based on a specialy design high data rate LiNb03
Mach-Zehnder modulator, coupled with a high performance RF driver and anautomatic bias control circuitry. It can also receive an internal laser source (DFB)
and a photodetection stage.
The ModBox-850nm-28Gbps-NRZ provides R&D and production engineers withthe peace of mind of a turn-key instrument and state of the art performance,
equivalent to its classical 1550 nm counterpart. It can be used as a referencetransmitter in optical telecommunications laboratories, or in production test
beds, and is especially useful for 100 GbEthernet related applications.

Features

Although labelled “28 Gb/s” because of the current bandwidth limitation of
850 nm telecom receivers, the ModBox-850nm-28Gbps-NRZ is designed anddimensioned for 44 Gb/s.

• 100 Mb/s up to 44 Gb/s

The ModBox 28 - 44 Gb/s are also available at 1550 nm, 1310 nm and 1060 nm.

• Short rise and fall time
• High Q factor• Automatic bias control

Performance Highlights
ParameterMin• Telecom laboratories• Components characterization• Transmission system test
• Production test

Max

Unit

850 nm band

Optical wavelength range

Applications

Typ

Modulation format

NRZ

Rise / fall time

-

15*-

ps

RMS added jitter-

1.5-

ps

Q-factor-13--* measurement limited by photodector bandwidth.

28 Gb/s Eye diagramOptions• DFB laser• Photodetector• Multi-channels version• NRZ 12.5 Gb/s version• 1550 nm, 1310 nm, 1060 nm• Stressed eye 100 GbE version• Alternative modulation formats RZ,
QPSK, DPSK,...

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TECHNO

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ModBox 850 nm 28 Gb/s NRZ

S

800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

Delivering Modulation Solutions
ModBoxFunctional Block Diagram
ModBox Front
Panel

ModBox Back
Panel
Laser

Out Laser

Laser Power
Control - GUI

Power Control

Laser lControl - GUI

In ModMBC
Control - GUI

Modulator

DCMBC
MBC Control Display & KeypadGain Control

RFDriver

In Data
Cross PointControl

Out ModPRVIn PRVOut PRVThe ModBox-850nm-28Gbps-NRZ integrates :•a high bandwidth, chirp-free, X-cut LiNb03 Mach-Zehnder modulator,•

a high bandwidth NRZ RF driver with gain and crossing level adjustment for eye diagram optimization,•a bias control circuit to lock the Mach-Zehnder modulator in quadrature mode and ensure a highly stable output
optical signal,•

an optional laser source, DFB, with its high precision driver that allows control of output power and•wavelength,
an optional high bandwidth photo-receiver (PRV).

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TECHNOLOGIE

ModBox 850 nm 28 Gb/s NRZ

S

800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

ModBoxInput Electrical Specifications
Parameter

User supplied, not a ModBox specification

SymbolCondition

Min

TypMax

Unit

Input electrical data-rate-

Single ended

0.1-

28Gb/sModulation format-

Single ended

Rise / fall timetr / tf

20 % - 80 %-

1518

ps

Impedance matching

ZIN--50-

W

Input signal amplitude

VIN

Single ended-0.5-Vpp

Input Optical Specifications

User supplied, not a ModBox specification
Min

TypMaxUnit

NRZ-Parameter

SymbolCondition

Laser type-

CW

Optical wavelength range--Polarization--

PowerPIN

CW

12050mW

DFB
780

850900nm

Linear and controlled-

Output Optical Specifications
Parameter

SymbolConditionMin

TypMaxUnit

Insertion lossIL

At maximum modulator transmission

-

68dB

DC extinction ratio

ERDC-

2023-

dB

Return loss

ORL-

-40-45-dB

Chirpa-

-0.1

00.1-

SymbolCondition

Min

TypMax

Unit

Output data-rate-Single ended

0.1*-

28Gb/sDriver gain range

GAdjustable-3-

dB

Driver cross point-Adjustable

455055%

Rise / fall timetr / tf

20 % - 80 %

-

1518

ps

Added jitterJRMS

JRMS = J2RMS-total - J2RMS-source-

1.52psDynamic extinction ratio

DER-

1013-

dB

Electrical return loss

S11-

--10-

dB

Output Modulated Signal - Measured with PhotoreceiverParameter* Automatic Bias Control is warranted from 5 Gb/s up to 44 Gb/s.

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional
operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure
to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter

Symbol

Min

Max

Unit

Optical input power

OPin-17dBm

RF input power

EPin

-

5dBm

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TECHNOLOGIEModBox 850 nm 28 Gb/s NRZS800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

ModBoxOptional 850 nm DFB Laser Specifications
Parameter

SymbolCondition

Min

TypMaxUnit

Wavelengthl

Other wavelength on request

845852855

nm

Laser type--

Optical output power-CW-

4050mW

Spectrum linewidth

Dl

FWHM-

2-

MHz

Optical return loss

ORL-

3035-

dB

Side mode suppression ratio

SMSR

-

30-

-dB

Optical output power adjustment

PCW

Front & back panels with GUI

1-

40mW

Wavelength laser tuning range-Back panel with GUI-

0.81nmSymbolCondition

MinTypMaxUnitPhotodetector type-

AC Coupled

PIN with TIA-

Input fiber type--Multimode fiber-

Operating wavelength range

l-

800

850900nm

Detector bandwidthf3dB

From 100 kHz-20-

GHzResponsivity

S@850 nm

-

0.3-

A/W

Optical sensitivity-@850 nm, 25 Gb/s, 231-1 PRBS

-

-6.5-

dBm

Overload-

50 % duty cycle

-

4-

dBm

Conversion gain-

@850nm, Single ended

-

75-

V/W

Detector output impedance

---

50-

WDFB-

Optional Photo-receiver Specifications
Parameterwww.photline.com

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TECHNOLOGIESModBox 850 nm 28 Gb/s NRZ

800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

ModBoxEye Diagrams
The following equipment was used in obtaining these results :- Pulse Pattern Generator : Anritsu MP1758A with Mux Centellax MS4S1V2M- Oscilloscope Agilent 86100B with time base precision 86107A- Photo-receiver 850nm

10 Gb/s data rate

Input signal

Output response

20 Gb/s data rate

Input signal

Output response

28 Gb/s data rate

Input signal
www.photline.com

Output response
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TECH

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ModBox 850 nm 28 Gb/s NRZ

800 band ; 100 Mb/s - 28 Gb/s Reference Transmitter

ModBoxDimensions - Interfaces - ComplianceDimensions
Dimensions

19 inches x 3U

Weight3 kg - 6.6 pounds

Power supply (rear panel)

100 - 120 V / 220 - 240 V automatic switch, 50 - 60 HzInterfaces
Optical connectors

FC/UPC - FC/APC - SC/UPC
50 W - V female

RF connector
Fiber

Polarization maintaining fiber, PM1550

Remote type

MBC - Laser - USB type B with Labview driverCompliance
SafetyEN 60625-1

MarkingCEOrdering Information

ModBox-W-DR-OL-ORx-XX

W = Wavelength range : 1550nm, 1310nm, 1060nm, 850nm						DR = maximum output Data-Rate : 12.5Gbps, 28Gbps, 44Gbps	OL = Laser Option, omit if no laser : wavelength in nm	ORx = Photo-receiver Option, omit if no photo-receiver- Rx : Photo-receiver
XX = Input / Output connectors, FA : FC/APC - FC : FC/UPC - SC : SC/UPC
Example : ModBox-850nm-28Gbps-850nm-Rx-FA is a modulation unit for 850 nm, 100 Mb/s - 28Gb/s NRZ opticalmodulated signal, with DFB laser at 850 nm and photo-receiver, FC-APC connectors.

About us
Photline Technologies is a provider of Fiber Optics Modulation Solutions based on the company LiNb03 modulatorsand high-speed electronics modules. Photline Technologies offers high speed and high data rate modulation solutions
for the telecommunication industry and the defense, aerospace, instruments and sensors markets. The products
offered by the company include : comprehensive range of intensity and phase modulators (800 nm, 1060 nm, 1300nm, 1550 nm, 2000 nm), RF drivers and modules, transmitters and modulation units.
Photline Technologies reserves the right to change, at any time and without notice, the specifications, design, function or form of its products described herein. All statements, specification, technical information related to the products herein are given in good faith and based
upon information believed to be reliable and accurate at the moment of printing. However theaccuracy and completeness thereof is not guaranteed. No liability is assumed for any inaccuracies and as a result of use of the products. The user must validate all parameters for eachapplication before use and he assumes all risks in connection with the use of the products.

ZI Les Tilleroyes - Trépillot
16, rue Auguste Jouchoux - 25000 Besançon - FRANCEtél. : +33 (0) 381 853 180 - fax : + 33 (0) 381 811 557

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V1, PT-January-2012