Complex Modulation Transmitter Solutions
World Leading Optical Transmitter Solutions
Emulated & Full Dual-Polarization IQTransmitter | Pulse Pattern Generator
IQTransmitter
IQPPG
·· High bandwidth of 26 GHz
·· Manual or software driven
automatic modulator bias control
·· Full dual-polarization
·· Emulated dual-polarization
·· DP-QPSK, DP-16-QAM, OFDM
generation with linear
RF amplifier
·· Narrow linewidth, tunable laser
·· Dual or Quad channel, each with
differential outputs
·· 5 - 30 Gbps gap free operation
with 1Mbps resolution
·· Multiple internal PRBS patterns
·· 16 Bit user programmable
pattern
Providing Complete Solutions to R&D Engineers
in Coherent Optical Communications
IQPulse Pattern Generator
RF electrical signal generation of high bandwidth
PRBS signals
Options available: IQPPG - 4 channel
IQPPG - 2 channel
IQTransmitter
Generation of optical signals encoded with
high bandwidth complex modulation formats DPQPSK, 16QAM and 64QAM
Options available:
IQTransmitter Full Dual-Polarization
IQTransmitter Emulated Dual-Polarization
YOUR FIBER
NETWORK
THE HIGHEST PERFORMING OPTICAL MODULATION ANALYZER ON THE MARKET
IQScope-RT
‘Gold Standard’ Coherent optical receiver
with up to 70GHz signal bandwidth
OPTICAL- LINQ
TM
Optical LINQ
Optical modulation analyzer software
Teledyne LeCroys’ LabMaster 10Zi
Real-time oscilloscope
Options available: 4 channel at 36GHz
4 channel at 65GHz
2
Coherent Solutions
Plug and Play Generation of High-Bandwidth Optical
Signals with Complex Modulation Formats
Optical Communication R&D Engineers need to be able
The IQTransmitter has been designed specifically for
to quickly and cost-effectively generate high-bandwidth
these applications. Leading edge components are tested
optical signals such as 30GBaud DP-QPSK to support their
and integrated into a product designed for reliability and
development in fields such as:
consistent high performance.
·· Design, test and calibrate your optical transmitter.
·· Characterise the full electric field: amplitude, phase and
PC Remote control via an intuitive GUI, the
polarization.
·· Develop next-generation modulation formats, test their
tolerance to network impairments using TRUE BER.
·· Identify transmitter and system anomalies using a wide
array of visualisation, including State-of-Polarization
versus time.
·· Develop and test control algorithms for active
components such as modulators, EDFAs, raman pumps...
·· Characterise the impact of passive components (filters,
dispersion compensating modules, ROADM) on the
system performance.
·· Design, test receiver DSP algorithms. Use MatLab to
'IQSignal-Manager' enables power-levels, auto-bias
controls, and manual bias points to be easily updated.
The IQPPG can be used with the IQTransmitter to
generate the electrical RF input signals for the generation
of DP-QPSK, QPSK, BPSK, & OOK coherently modulated
optical signals.
IQSignal-Manager provides full control over both units to
provide the R&D Engineer with full control over electrical
and optical signal generation.
Alternatively a dual or quad-channel separate AWG can
be used with the IQTransmitter to generate multi-level
modulation formats such as 16QAM or 64QAM.
develop and add your own algorithm in the DSP chain.
KEY FEATURES
IQTRANSMITTER IQPPG
·· Highly customizable
·· Dual or Quad channel, each with differential outputs.
·· High bandwidth of 26 GHz (typical)
·· 5 - 30 Gbps gap free operation.
·· Analogue manual modulator bias control
·· Integrated Clock Generator, tunable from 5-38GHz with
·· Software driven automatic modulator bias control
1MHz resolution.
·· Full dual-polarization generation
·· Multiple internal PRBS patterns
·· Emulated dual-polarization generation
·· 16 Bit user programmable pattern.
·· DP-QPSK, DP-16-QAM, OFDM generation with
·· Remote control from the same GUI as the IQTransmitter
·· Configured to provide optimal RF inputs to the
linear RF amplifier
·· Narrow linewidth, built-in tunable laser
IQTransmitter - Out of the Box.
·· Suitable for the generation of DP-QPSK, QPSK, BPSK
& OOK modulation formats.
Complex Modulation Transmitter Solutions
1
A high quality DP-QPSK signal at 32.1 GBaud generated with IQTransmitter and Anritsu MP1800A PPG
2
A high quality DP-16 QAM signal at 32 GBaud
generated with IQTransmitter and Anritsu MP1800A
PPG and MP1834A Pam 4 converter
Coherent Solutions
Coherent Solutions’ IQTransmitter for
Greater Flexibility and Ease of Use
The IQTransmitter enables quick and simple generation
of phase modulated optical signals in one, simple to use,
bench-top package. Even better, the IQTransmitter’s
unique range of customizations give you unrivalled
flexibility and even greater value - Out of the Box.
The Most Cost Effective Test Source
Full Dual-Polarization complex modulation optical transmitter systems with 4
channel PPGs can be prohibitively expensive; requiring investment in multiple
high speed PPGs. The IQTransmitter’s emulated dual-polarization capability
uses optical multiplexing technique to generate a dual-polarization signal from
a single-polarization modulated signal. So with the emulated dual-polarization
generator you can create DP-QPSK signals using two differential outputs of a
single channel PPG – significantly reducing costs.
More Flexibility in Modulator Bias Control
The option of the automatic modulator bias control replaces the standard
manual hardware modulator bias control with fully functional software
control. You can use the dedicated bias control software to adjust individual
bias settings or select automatic optimization, which lets you quickly and
effortlessly generate optimized QPSK or 16-QAM signals.
Generate 16-QAM, OFDM and more
The IQTransmitter uses high bandwidth linear RF amplifiers to enable
generation of any multi-level optical modulation formats when used with RF
Arbitrary Waveform Generators (AWG).
The ideal 'Golden' optical signal source
Generating and controlling phase modulated optical signal is made easy
with the IQTransmitter. Available in two different versions; emulated dualpolarization and full dual-polarization, you get never before available flexibility
from the outset. Its high bandwidth of 26 GHz (typical) ensures high quality
optical signal generation even at Baud rates exceeding 30 GBaud, making
it the ideal 'Golden' optical signal source for coherent communications
applications.
Complex Modulation Transmitter Solutions
3
Introducing the
Emulated Dual-Polarization IQTransmitter
Emulated dual-polarization generation is a cost-effective solution which enables you to
generate dual-polarization phase modulated signals with just two RF input channels.
The Emulated Dual-Polarization IQ Transmitter achieves
two RF inputs can be driven by differential outputs of a
this by optically polarization multiplexing a delayed copy
single channel data source, making it even more cost-
of the single-polarization modulated signal. And those
effective.
IQTransmitter-EDP
Power On/Off
Internal laser
control
4
Internal laser
output
IQTransmitter-EDP
generator optical
input / output
Modulator optical
input / output
Adjustable
IQ RF delay;
optional
Coherent Solutions
Modulator bias
controls; optional
High-speed RF
signal inputs
IQTransmitter-EDP Schematic Diagram
Single-Pol.
LO Input
LO Output
Bias Controls
Q
I
Laser
I&Q Phase
RF Signal
IQ Skew Inputs (<0.5V)
Q
Control
I
Single-Pol.
Output
IQ Modulator
Optical Delay
RF Amplifier
Polarization Beam
Combiner
50/50% optical
beam splitter
Dual-Pol.
Generator Input
Dual-Pol.
Generator Output
USB to PC
LEGEND
Standard Features
Optical
Connection
Ethernet to PC
Electrical
Connection
RF Connection
Available Options
·· Emulated dual-polarization generator
·· High bandwidth of 26 GHz (typical)
·· 2 x 1.85 mm high speed RF signal inputs
·· Built-in C-band narrow linewidth tunable laser
·· Manual hardware modulator bias controls
·· High bandwidth linear RF amplifiers
ABC
·· Choose automatic bias control via a dedicated
software controller which replaces the manual
hardware bias controls
NLIN ·· Choose non-linear RF amplifiers to increase
signal quality of QPSK, BPSK and OOK
modulation formats
ADL
·· Choose adjustable RF delay option when
control of the skew between RF inputs is
required
Complex Modulation Transmitter Solutions
5
Introducing the Full Dual-Polarization IQTransmitter
The full dual-polarization IQTransmitter is a leader in its class; providing more capability,
more flexibility, greater ease of use and all at a price point that offers unrivalled value.
For applications requiring loading and transmission
IQTransmitter works with any 4 channel PPG or AWG; it is
of true data, the full dual-polarization IQTransmitter
compatible with your existing equipment and includes a
provides capability to transmit independent data on
range of options to optimize your investment.
all four tributary RF channels. The full dual-polarization
IQTransmitter-FDP
Power On/Off
Internal laser
control
6
Internal laser
output
Modulator optical
input/output
High-speed RF
signal inputs
Coherent Solutions
IQTransmitter-FDP Schematic Diagram
RF Signal Inputs
Optical Input
X-Q
X-I
Optical Output
Y-Q
Y-I
Linear RF Amps
Polarization Diverse IQ Modulator
X-I
X-Q
Laser
LO Output
X-Phase
Y-Q
Y-I
Y-Phase
Automatic Bias Control
USB to PC
Ethernet to PC
LEGEND
Standard Features
Optical
Connection
Electrical
Connection
RF Connection
Available Options
·· High bandwidth of 26 GHz (typical)
·· 4 x 1.85 mm high speed RF signal inputs
·· Built-in C-band narrow linewidth tunable laser
·· Automatic software modulator bias control
·· High bandwidth linear RF amplifiers
CLBL ·· Choose C & L band built-in tunable laser
with <100 kHz linewidth and up to 15 dBm of
output power
NLIN ·· Choose non-linear RF amplifiers to increase
signal quality of QPSK, BPSK and OOK
modulation formats
Complex Modulation Transmitter Solutions
7
Introducing the IQPulse Pattern Generator
The IQPPG is a multi-channel high bitrate (30Gbps) Pulse Pattern Generator with
internal clock synthesizer, and is optimized for use with the IQTransmitter to transmit
high bandwidth optical signals using a variety of coherent modulation formats such
as DP-QPSK, QPSK, BPSK, & OOK.
The unit is controlled via the same intuitive software,
Together, the IQPPG & IQTransmitter provide the optical
the 'IQSignal-Manager', as the IQTransmitter, enabling
communication R&D engineer with a high performance,
the user to easily monitor and modify all aspects of the
yet versatile Plug & Play Solution for generating high
electrical and optical signal generation.
bitrate coherently modulated optical signals.
30Gbps
Available Options
The IQPPG - Dual-channel has independent outputs, with
The Quad-channel version provides independent data
four differential outputs, and is suitable for the generation
channels for all four channels in a DP-QPSK system; Ix,
of DP-QPSK signals with independent data streams on
Qx, Iy and Qy. This is ideal for applications where different
either the I & Q or X-pol & Y-pol. This provides the most
data on each channel is necessary to fully characterize
cost-effective solution for those wishing to characterize
system performance e.g. cross-talk between X-pol & Y-pol.
the performance of downstream optical components and
subsystems.
20Gbps
8
Coherent Solutions
IQPulse Pattern Generator - 4 Channel
Power On/Off
PPG outputs
Trigger out
PPG differential outputs
PPG control
IQPulse Pattern Generator - 2 Channel
Power On/Off
PPG control
Trigger out
PPG outputs
PPG differential outputs
Complex Modulation Transmitter Solutions
9
Versatile Configuration Options for
Different Applications
Full Dual-pol nQam Optical Signal Generation
FDP
When used in conjunction with an appropriate 4-channel AWG (or two 2-channels
Qx (Ch.1)
AWG’s synchronised), fully independent Dual-pol nQam optical signals can be
synthesised. Enabling the R&D Engineer to generate optical data streams that
reflect current state-of-art long-haul optical communication systems.
Ix (Ch.2)
x-pol
Qy (Ch.3)
Iy (Ch.4)
AWG
CH1
CH2
CH3
CH4
y-pol
Emulated Dual-pol nQam Optical Signal Generation
For the majority of R&D applications, it is not essential that the two polarization
EDP
states contain different data, e.g. coherent receiver R&D. In such applications the
Emulated Dual-pol IQTransmitter offers a more cost-effective solution. Not only is
Q (Ch.1)
the cost of the -EDP lower than the -FDP configuration, but as only two AWG input
channels are required, the total cost of ownership is considerably lower.
I (Ch.2)
x-pol
Q (Ch.1)
I (Ch.2)
AWG
CH1
CH2
y-pol
10
Coherent Solutions
Full Dual-pol QPSK
For fully independent Dual-pol QPSK optical signal generation the IQTransmitterFDP & IQPPG-QUAD offers the most integrated and simple to use solution on
QPSK 1
the market, yet still contains all the functionality within the software GUI to fully
optimize and modify each of the four RF input channels and complex optical
output signal. If you need to generate full DP-QPSK at >100Gbps in your lab -
Qx (Ch.1)
this is the solution that will generate the signals you need without breaking your
budget, or requiring hours of time to set-up and continually monitor in order to
achieve repeatable results.
Ix (Ch.2)
x-pol
Qy (Ch.3)
Iy (Ch.4)
y-pol
INNOVATION
TECHNOLOGY
Complex Modulation Transmitter Solutions
11
Dual-pol QPSK
If you need high-quality, high-bandwidth DP-QPSK optical signals, but don’t need
independent data on the X & Y polarizations, use the IQPPG-DUAL to generate
QPSK 2
your signals. With the addition of an external delay-line, full control of the skew
between I & Q channels in each polarization can be achieved. This configuration
minimizes the initial investment required to generate DP-QPSK signals, but offers
the ability for the user to upgrade to a full Dual-pol system without having to
Qx (Ch.1)
upgrade the IQTransmitter.
Ix (Ch.2)
x-pol
Qy (Ch.1)
delay
line
delay
line
Iy (Ch.2)
y-pol
Emulated Dual-pol QPSK
This configuration offers the most cost-effective solution for generating DP-
EDP-ABC+IQPPG
QPSK optical signals at high baud-rates. The IQPPG-DUAL offers two channels
of independent data (for I & Q) at up to 30Gbps. The IQTransmitter optically
multiplexes this data onto both orthogonal polarizations - providing a 100Gbps
Q (Ch.1)
DP-QPSK optical data-stream at a fraction of the cost of competitive solutions.
I (Ch.2)
x-pol
Q (Ch.1)
I (Ch.2)
y-pol
12
Coherent Solutions
Product Selection Guide
IQTransmitter
FDP
Option
Description
Provides fully independent modulation of Ix, Qx, Iy, Qy
Linear internal RF amplifiers, suitable for nQAM and QPSK modulation formats
C+L Band operation
Internal C-Band narrow linewidth tunable laser
CLBL
Internal C & L -Band narrow linewidth tunable lasers
NLIN
Non-linear internal RF amplifiers optimized for QPSK, BPSK, OOK modulation formats
EDP
2 RF inputs (I & Q) which are optically multiplexed to produce Ix, Qx, Iy, Qy
C Band operation
Internal C-Band narrow linewidth tunable laser
Manual modulator bias controls and phase offset
ABC
Automatic modulator bias control and laser control via PC GUI
NLIN
Non-linear internal RF amplifiers optimized for QPSK, BPSK, OOK modulation formats
ADL
Manual RF delay adjustment when skew control between RF inputs is required.
This is of use when a single-channel PPG is used (data & data)
IQPPG
Option
Description
DUAL
Dual-channel PPG with two differential RF outputs, 5-30Gbps per channel
Internal clock generator
QUAD
Quad-channel PPG with four differential RF outputs, 5-30Gbps per channel
Internal clock generator
Non-linear RF Amplifiers (NLIN)
NLIN option replaces the highly linear RF amplifier with non-linear RF amplifier to increase signal quality for modulation
formats such as QPSK, BPSK and OOK. The specification for this option is dependent on selection of other options please enquire with your desired product configuration.
Complex Modulation Transmitter Solutions
13
Technical Specifications
Emulated Dual-Polarization IQTransmitter
Optical Modulator
Modulator Type
Single-polarization LiNbO3 Mach-Zehnder
Wavelength Range
1530 - 1570 nm
Optical Return Loss
30 dB (minimum)
DC Extinction Ratio
20 dB (minimum)
Maximum Optical Input Power
16 dBm
Input Optical Connector Type
PM FC/PC
Output Optical Connector Type
PM FC/PC
RF Bandwidth
22 GHz (minimum) 26 GHz (typical)
Number of RF Inputs
2
RF Connector Type
RF 1.85 mm Female
RF Return Loss
-15 dB (typical)
Maximum RF Input Voltage
500 mV
Emulated Dual-Polarization Generator
Insertion Loss
<2 dB
Input Optical Connector Type
PM FC/PC
Output Optical Connector Type
PM FC/PC
General Characteristics
Dimensions
440 (w) x 390 (d) x 97 (h) mm, (17.32" (w) x 15.35" (d) x 3.82" (h))
Weight
6 kg (13.2 lbs)
PC Interface
USB 2.0, Ethernet
Operating System Requirements
32 or 64 bit Windows XP, Vista, 7 or 8
Power Supply
100 - 240 V, 50 - 60 Hz, 70w
Operating Temperature Range
+5 °C to +45 °C (41 °F to 113 °F)
See page 16 for Options
Now optional: Adjustable IQ RF Delay
Adjustable Delay Range
100 ps
Fixed Delay Offset
500 ps at minimum adjustable delay setting
Phase Shift Per Shaft Turn
1.6 °/GHz
Time Delay Per Shaft Turn
4.4 ps
RF Bandwidth
50 GHz (typical)
Note: All specifications subject to change without notice
14
Coherent Solutions
Full Dual-Polarization IQTransmitter
Optical Modulator
Modulator Type
Dual-polarization LiNbO3 Mach-Zehnder
Wavelength Range
1530 - 1610 nm
DC Extinction Ratio
20 dB (minimum)
Maximum Optical Input Power
16 dBm
Input Optical Connector Type
PM FC/PC
Output Optical Connector Type
PM FC/PC
RF Bandwidth
23 GHz (minimum), 26 GHz (typical)
Number of RF Inputs
4
RF Connector Type
RF 1.85 mm Female
RF Return Loss
-15 dB (typical)
Maximum RF Input Voltage
500 mV
General Characteristics
Dimensions
440 (w) x 390 (d) x 97 (h) mm, (17.32" (w) x 15.35" (d) x 3.82" (h))
Weight
6 kg (13.2 lbs)
PC Interface
USB 2.0, Ethernet
Operating System Requirements
32 or 64 bit Windows XP, Vista, 7 or 8
Power Supply
100 - 240 V, 50 - 60 Hz, 70w
Operating Temperature Range
+5 °C to +45 °C (41 °F to 113 °F)
See page 16 for Options
IQPulse Pattern Generator
Minimum Bit Rate
5 Gbps
Maximum Bit Rate
30 Gbps (minimum), 32 Gbps (Typical)
RF connections
2.92 mm Female
Number of Channels
2 independent channels with data or 4 independent channels with data
Maximum Output Voltage
350 mV (minimum), 430 mV (typical), 500 mV (maximum)
Rise/Fall time (20%-80%)
15 ps (typical)
Jitter (rms)
550 fs (typical)
Skew control
± 1 UI
Trigger Output
clock/16, sma female
Reference Signal
10Mhz input and output, sma female
PRBS patterns
27-1, 211-1, 215-1, 223-1, 231-1 and 16bit user defined
PC control
USB 2.0, Ethernet
Power
100-240VAC, 50/60Hz, 70W
Dimensions
440 (w) x 390 (d) x 97 (h) mm, (17.32" (w) x 15.35" (d) x 3.82" (h))
Note: All specifications subject to change without notice
Complex Modulation Transmitter Solutions
15
Options
Automatic Bias Control (ABC)
ABC option replaces the hardware bias controls with a software interface. The software allows individual adjustment
of I, Q and IQ phase offset and also can optimize the bias points automatically.
PC Interface
USB 2.0, Ethernet
Operating System Requirements
32 or 64 bit Windows XP, Vista, 7 or 8
Supported Modulation Formats
QPSK, QAM, Arbitrary
Bias Control Options
Automatic locking, individual manual bias control
Built-in Tunable Laser (Option CLBL)
THzA C-band tunable laser is built-in as standard option. You can upgrade to -CLBL option to increase its wavelength
range to C and L bands. You can also remove the built-in laser with -NBL option, for an extra cost reduction.
Wavelength Tuning
C-band (Standard)
C & L-band (Optional)
Operating Wavelength Range
1527.60 - 1565.50 nm
1527.60 - 1565.50 nm
and 1570.01 to 1608.76 nm
Operating Frequency Range
191.5 - 196.25 THz
191.5 - 196.25 THz
and 186.35 - 190.95 TH
Laser Type
Thermally tuned external cavity diode laser (ECDL)
Frequency Tuning Resolution (Front Panel)
1 GHz
Wavelength Tuning Resolution (Front Panel)
~10 pm
Frequency step-size (ITU-grid mode)
25 GHz
Wavelength step-size (ITU-grid mode)
~0.2 nm
Frequency Tuning Repeatability
± 0.3 GHz
Tuning Time
3 ~10 sec
Spectral Characteristics
Linewidth (FWHM), Instantaneous
< 100 kHz
Side Mode Suppression Ratio
55 dB typical (40 dB min)
Relative Frequency Accuracy
± 1.5 GHz
Absolute Frequency Accuracy
± 2.5 GHz
Frequency Stability
± 0.3 GHz over 24 hours
Relative Intensity Noise RIN (for 13 dBm)
-145 dB/Hz (10 MHz - 40 GHz)
Optical Power
Power Optical Output Power
15.5 dBm
Minimum Optical Output Power
7 dBm
Optical Power Accuracy (EOL)
± 1 dB
Short-term Power Variation
0.05 dB
Output Power Step Size
0.01 dB
Power Repeatability
± 0.08 dB
Polarization Extinction Ratio
> 20 dB at the PM fiber output
RIN for 13 dBm Output Power
< -145 dB/Hz
Power Monitoring
Built-in
Note: All specifications subject to change without notice
16
Coherent Solutions
Complex Modulation Transmitter Solutions
17
To find out more, get in touch with us today.
Coherent Solutions Ltd
Unit A, 28 Canaveral Drive
Rosedale, Auckland 0632
New Zealand
General Enquiries: sales@coherent-solutions.com
Technical Support: support@coherent-solutions.com
Tel: +64 9 478 4849
Fax:+64 9 478 4851
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© 2015 Coherent Solutions Ltd. All rights reserved. No part of this publication may be reproduced, adapted, or translated in any form or by any means without the
prior permission from Coherent Solutions Ltd. All specifications are subject to change without notice. Please contact Coherent Solutions for the latest information.
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