ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBoxThe ModBox-OBand-28Gbaud-PAM4 il O-band Linear Reference Transmitterthat generates excellent quality optical data streams PAM-4 up to 28 Gbaud andNRZ up to 28 Gb/s. The transmitter produces very clean eye diagrams with high
SNR and fast rise and fall times. It also provides the flexibility of adjusting theextinction ratio for vertical eye closure.
The ModBox-OBand-28Gbaud-PAM4 provides R&D and Production engineers
with a user friendly turn-key instrument delivering state of the art performance.
It is being used in optical telecommunications laboratories and production testbeds.
The equipment incorporates a modulation stage based on a chirp-free LiNb03
Mach-Zehnder modulator, coupled with a high performance RF driver and an
automatic bias control circuitry. It also integrates a 1310 nm DFB laser source,and optional C-WDM or LAN-WDM lasers lanes.

FEATURES• Full O-Band Reference Transmitter

In addition to the O-band, iXblue offers reference transmitters in the C-band andat 850 nm.

• PAM-4 up to 28 Gbaud• NRZ up to 28 Gb/sPerformance Highlights• 1310 nm laser embedded by defautParameter• Reliable & reproducible measurements

Operating wavelength• High eye diagram stability

Modulation format• Extinction Ratio Adjustable

Modulation bandwidth
Modulated output power (option HP)

Min

TypMax1270 nm1310 nm1330 nm

PAM-4, NRZ
PAM-4 up to 28 Gbaud, NRZ up to 28 Gb/s
6 dBm

--

APPLICATIONS• Transmission system test
• Components characterization• Production test
• R&D laboratories
OPTIONS• C-WDM: 1270 nm, 1290 nm, 1330 nm• LAN-WDM: 1295 nm, 1300 nm, 1305 nm• Multi-Channel• 850 nm, C-band

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ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBoxFunctional Block Diagram

Laser(s)Laser(s) output(s)Mod input

Modulator

DCRFMBC

DriverRF input

Mod output

The ModBox-OBand-28Gbaud-PAM4 features:•A chirp-free X-cut LiNb03 (Lithium Niobate) Mach-Zehnder Intensity modulator. It is selected for its highelectro-optic bandwidth with flat and low ripple electro-optic response curve.
•A high bandwidth and highly linear RF driver.
•A modulator bias controller. The internal LiNbO3 modulator is a X-cut device with very low drift. However anautomatic bias control circuit is provided to lock the operating point of the modulator at the quadrature point whatever theenvironmental and optical (laser power and wavelength) conditions. The MBC ensures a highly stable optical output signal toprovide reliable and reproducible measurements.
•A 1310 nm low RIN laser is integrated by default. For convenience, an external patch cord is delivered toconnect the laser output to the optical input of the modulation stage. Wavelength and power are tunable through the front
panel controls or the ModBox software interface.
The ModBox-OBand-28Gbaud-PAM4 is controlled from the front panel via the Smart interface with a simple rotary knob andkeypad. The Smart manual interface allows for bias control circuit, RF driver and laser settings. It comes also with a simple GUI
solution, Windows based and implemented through the USB interface of the user PC.

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ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBoxInput Electrical Specifications

User supplied, not a ModBox specification

Parameter

SymbolCondition

Min

TypMax

Unit

Data-rate-

PAM-4 electrical input signal

0.1-

28Gbaud

NRZ electrical input signal

0.1-

28

Gb/s

Input voltage

VIN

AC coupled - 50 W SE - Linear operation

-

0.200

0.300

Vpp

Jitter

JRMS--1

1.2

ps

Rise / fall timetr / tf

20 % - 80 %-

1318

ps

Corss-point-

NRZ mode

455055%

Input Optical Specifications

User supplied, not a ModBox specification

Parameter

SymbolCondition

MinTypMaxUnitOperationlCW

1270-

1330

nm

Polarization--

PowerOPIN--

10-

dBm

Side Mode Supression Ratio

SMSR-30--dB

Spectrum linewidth

Dl

FWHM-0.51MHz

Polarization Extinction ratio

PER--

19-

dB

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Linear and controlled

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ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBox
Output Optical Specifications
Parameter

Specifications below are given with embedded 1310 nm laser, unless differently specified.

SymbolCondition

MinTypMax

Unit

Embedded Laserl

DFB integrated by default - Note (1)-1310-nm

Data format--

Data-rate-

PAM-4 & NRZ-

PAM-4 electrical input signal

0.1-

28Gbaud

NRZ electrical input signal

0.1-

28Gb/sWith embedded 1310 nm laser

23-dBmHigh output power option @1310 nm

67-

dBm

Option: 1295nm, 1300nm, 1305nm

23-

dBm

Option: 1270 nm, 1290 nm, 1330 nm

23-dBmJRMS

RMS Jitter, NRZ mode

-0.8-

psJPP

Peak-to-Peak Jitter, NRZ mode-5-psMinimum dynamic extinction ratio

DERMIN

By NRZ data input level adjustment

2--dB

Maximum dynamic extinction ratio

DERMAX

By NRZ data input level adjustment-1013dB

Dynamic Signal to Noise Ratio

SNR

NRZ mode

-

12-

dB

Rise / fall timetr / tf

NRZ mode-15-

ps

Crosspoint-

NRZ mode

45

5055%

Optical return loss

ORL-

-40-45-dB

SymbolCondition

MinTypMax

Unit

Wavelength laser tuning range

dl

Diode chip temperature control-0.81nm

Optical output power adjustment

dOPOUT

Diode Injection current control

0-

100%Eye amplitude adjustment

dER--3-dB

Eye crosspoint adjustment

---4-

4%

Output modulated power

JitterOPOUT

SMART Interface and GUI
Parameter(1): Additional C-WDM and LAN-WDM lasers can be integrated in option.

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 ofthe 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 maximumratings for extended periods can adversely affect device reliability.
ParameterSymbolMinMax

Unit

Input voltage

VIN-1Vpp

Optical input power

OPin-20dBm

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ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBoxEye Diagrams - NRZ 25 Gb/s - 1310 nm - From ModBox-OBand-28Gbaud-PAM4

Eye Diagrams - PAM-4 25 Gbaud - 1310 nm - From ModBox-OBand-28Gbaud-PAM4

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ModBox-OBand-28Gbaud-PAM4O-Band, 28 Gbaud PAM-4 Reference Transmitter

ModBoxInterfaces, Dimensions and ComplianceInterfaces
OpticalPolarization maintaining fiber PM1300 - FC/APC (by default, other connectors type in option)

RF inputSingle 1.85 mm - V female RF connector - 50 W

Control

Smart Interface (front panel), GUI (USB typeB)

Power supply

100-120V/220-240 automatic switch 50-60Hz (Rear panel)

EMC and optical norms

EN61326-1 Ed. 2006 / NF EN 60825-1 & EN 60825-2 Ed.2014

Dimensions / Weight

Rack 19" x 3U, Depth=375mm / 3 kg

LAN-WDM Laser ModBox example - Front panel

Ordering information			

ModBox-OBand-28Gbaud-PAM4

Opt-DFB-XXDFB laser option
XX = Optional additional laser - LAN-WDM or CWDM Wavelength in nm

Opt-YYYY = Output connectors, FA : FC/APC - FC : FC/UPC - SA : SC/APC- SC : SC/UPC

About us
iXBlue Photonics produces specialty optical fibers and Bragg gratings based fiber optics components and optical modulation
solutions based on the company lithium niobate (LiNbO3) modulators and RF electronic modules.
iXBlue Photonics serves a wide range of industries: sensing and instruments, defense, telecommunications, space and fiber
lasers as well as research laboratories all over the world.
Ixblue reserves the right to change, at any time and without notice, the specifications, design, function orform of its products described herein. All statements, specification, technical information related to theproducts herein are given in good faith and based upon information believed to be reliable and accurate
at the moment of printing. However the accuracy 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 each application before use and he assumes all risks in connection with the use of the products

3, rue Sophie Germain
25 000 Besançon - FRANCE
Tel. : +33 (0) 381 853 180 - Fax : + 33 (0) 381 811 557
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09-2017_PT_SP_ED1

OBand = Full band of operation, embeds laser, 1310 nm laser embedded by default
28Gbaud = Data-rate: NRZ up to 28 Gb/s - PAM-4 up to 28 Gbaud