SHF Communication Technologies AG,
Amalienstrasse 14 • 12247 Berlin – Lankwitz, Phone ++49 30 / 772 05 10, Fax ++49 30 / 753 10 78,
E-Mail: mail@shf.biz, Web: http://www.shf.biz

Datasheet
SHF 5003 RZ
Optical TransmitterDescription
The SHF 5003 RZ Optical Transmitter converts electrical signals into RZ optical signals at a data
rate of up to 50 Gbps.
The main elements of the SHF 5003 RZ are two thermally stable Corning OTI X-cut Lithium
Niobate Mach-Zehnder modulators which are each driven by an individually optimized amplifier.
One amplifier amplifies a clock signal which is used to drive the first modulator. The output fromthis modulator is a train of pulses of constant width. These pulses are fed into the secondmodulator. The pulsed light is then modulated by the data signal. In this way, RZ signals areproduced from an incoming NRZ signal.
The temperature stable modulators and an automatic bias circuit ensure high stability of the output
signal. All features on the instrument can be controlled remotely via a GPIB connection.

Features
50 GBit/s TDM RZ optical data streams< 9 ps rise and fall time digital optical signals at 44 GBit/s
50 kHz to >40 GHz E/O conversion bandwidth (typical)
Quick optimization of optical eye diagram performance by user adjustable gain and modulator
bias control
Short optical pulses for soliton applications
GPIB connector for remote control
All features computer controlled
Both modulators’ bias conditions controlled automatically
Selectable automatic and manual bias control (ABC circuit)

Functional block diagram

SHF reserves the right to change specifications and design without notice - SHF 5003 RZ – Rev. 1.35 – 20/AUG/2003 Page 2/5

Specifications
ParameterOptical parameters
Wavelength range
Insertion loss

UnitExtinction ratio
Return loss
Chirp (Alpha parameter)
Positive slope
Negative slope

dBdB

Min.

Typ.

Max.

C- and L-band
1011dB
1113500.03-0.01

kHz%

connector to connector,maximum transmission
without modulation
without optical connector

0.1
-0.1

Electrical and electro-optical parameters
Electro-optical bandwidth ofGHz40
NRZ data modulator
Bit rate
Gbps
RZ
3644
NRZ
250
Drive amplifier electrical return lossdB
NRZ data-10
RZ clock input-10
Drive amplifier input levelVpp(dBm) 0.35 (-5) 0.4 (-4) 0.45 (-3)
NRZ data input
RZ clock input
0.5 (-2) 0.6 (0)1.2 (6)
Dynamic extinction ratio
dBNRZ
1113
RZ
1214
CS-RZ
1214
Dynamic signal to noise ratio
NRZ
14
RZ
17
CS-RZ
17
Output rise and fall times
ps
NRZ
910
Pulse width (FWHM)
psRZ
12
CS-RZ
15
Output timing jitter <RMS>
ps
NRZ
1.0RZ
0.4
CS-RZ
0.4
Position of crossing point%455055
Auto-bias control
Dither signal frequency
Dither signal amplitute (% of40Gb/s drive data signal)

Conditions

small signal measurement
1method-3dB electricalmeasured between data
‘1’ and long sequence of‘0’20%…80% as displayedon oscilloscope

total RMS jitter measuredwith Agilent Mainframe
86100A + 70 GHz plug in
86118A + precision
timebase 86107A

1011(F. Devaux, Y. Sorel and J.F. Kerdiles, "Simple Measurement of Fiber Dispersion and of Chirp Parameter of Intensity Modulated
Light Emitter", J. Lightwave Technol., vol. 11, no. 12, December 1993)

SHF reserves the right to change specifications and design without notice - SHF 5003 RZ – Rev. 1.35 – 20/AUG/2003 Page 3/5

Parameter
Unit
Absolute maximum ratings
Optical input powerdBmdBm
NRZ data amplifier inputpower
RZ clock driver input power dBm
GeneralWeightDimensions
Power supply
Power consumption
Operating temperature
Storage temperature
Electrical data input
connector
Clock input connector
Optical connectors (inputand output)kgmm
VW°C°C

Min.

Typ.

8Max.

Conditions

20
41010CW
in operation
without power supply

990
180
15-2011023060

135270472x365x110
47…63 Hz3585
V (1.85 mm) male
K (2.9 mm) male
FC/PC (othersavailable on request)

Test Measurements
The signal source used in all measurements was an SHF BPG 44 E LJ operating at 40 Gbps.
Optical output signals from the SHF 5003 RZ were detected with a high speed photodetector
and displayed on an Agilent 86100A oscilloscope with an 86118A 70 GHz plug-in and precisiontime base. The optical spectra were measured with an ANDO AQ 6317B optical spectrum
analyzer.

Input electrical waveformSHF reserves the right to change specifications and design without notice - SHF 5003 RZ – Rev. 1.35 – 20/AUG/2003 Page 4/5

40 Gbps C-RZ optical output waveform

40 Gbps CS-RZ optical output waveform

40 Gbps NRZ optical output waveformSHF reserves the right to change specifications and design without notice - SHF 5003 RZ – Rev. 1.35 – 20/AUG/2003 Page 5/5