COMMUNICATIONS COMPONENTS
Key Features • Designed to work with bias control circuits
• Small-outline package
• 1530 to 1565 nm operation; L-band versions available
• Low drive voltage; compatible with commercial drivers
• Low chirp for maximum transmission distance (>1000 km)
The 2.5 Gb/s bias-ready modulator is a digital device in which the bias point of
the interferometer is set using an applied voltage, typically with a control loop, to
operate at the half-intensity point (quadrature). This design uses our x-cut
technology, which has been field-proven and provides the best stability in the bias
point over life. The device provides superior signal quality across a wide range of
wavelengths in the C and L bands and can be used to modulate tunable lasers. The
modulator is designed for medium- and long-haul transmission in dense
wavelength division multiplexing (DWDM) and time division multiplexing
(TDM) systems.
Applications
• Medium- and long-haul transmission
• DWDM and TDM transmission
Compliance
• Telcordia 468
2.5 Gb/s Bias-Ready Modulator Butterfly Package
NORTH AMERICA:800 498-JDSU (5378) WEBSITE:www.jdsu.comWORLDWIDE:+800 5378-JDSU
Typical Performance Characteristics
2
2.5 GB/S BIAS-READY MODULATOR
BUTTERFLY PACKAGE
Dimensions Diagram
-12.0
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
S21 (dB)
Typical Frequency Response Curve, S21
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0.00.5 1.01.52.0 2.53.0
Frequency (GHz)
S11(dB)
Typical Return Loss Curve, S11
(Specifications in inches [mm] unless otherwise noted.)
2.047 [51.99].201 [5.11]
(5) PL
.200 [5.08]
3.948 [100.28]
.749 [19.02]
(2) PL (2) PL
.146 [3.71]
.200 [5.08]
.635 [16.13]
.735 [18.67]
.835 [21.21]
1.235 [31.37]
1.435 [36.45]
2.250 [57.15]
2.450 [62.23]
.157 [3.99]
.506 [12.85]
.285 [7.24]
(2) PL
.151 [3.84]
(2) PL
Ø.079 [Ø2.01]
(2) PL
.040 [1.02]
.298 [7.57]
.433 [11.00]
(2) PL
.143 [3.63]
(5) PL
BOTTOM OF PINS
.374 [9.50]
(2) PL
(2) PL .231 [5.87]
39.37±1.97 [1000±50]
7.87 [200] MINIMUM
39.37±1.97 [1000±50]
7.87 [200]
GND RF GND DC GND
IN OUT
Ø.177 [4.50]
MINIMUM
3
2.5 GB/S BIAS-READY MODULATOR
BUTTERFLY PACKAGE
Specifications
Parameter Specification
General
Material Lithium niobate
Crystal orientation x-cut, y-propagating
Waveguide process Titanium-indiffused
Optical
Operating wavelength 1530 to 1565 nm
Insertion loss, no connectors2≤ 4.5 dB
On/off extinction ratio, low frequency ≥ 20 dB
Optical return loss ≥ 50 dB
Electrical
RF port
Drive voltage, V peak-to-peak, at 2.5 Gb/s PRBS 33.9 V typical
Vπat 100 kHz 3≤ 4.5 V
S21 electro-optic bandwidth (-3 dBe) 1, 3 ≥ 2.5 GHz
S11 return loss, 0.03 to 2.5 GHz 3≤ -8 dB
RF input power ≤ 24 dBm
Chirp, alpha parameter |α|< 0.2
Bias port
Vπat DC ≤ 8.5 V
Mechanical
Input Fujikura SM-15-P-8/125-UV/UV-400
Output4SMF-28
RF connection Pins
Bias connection Pins
Environmental
Qualification reference Telcordia 468
Operating temperature 0 to 65 °C
Storage temperature -40 to 85 °C
1. Relative to 30 MHz.
2. Insertion loss is measured at the maximum of the modulator’s transfer function and does not include the 3 dB loss incurred when operating at quadrature.
3. Variances with temperature and wavelength included.
4. PM output fiber also available.
NORTH AMERICA:800 498-JDSU (5378) WEBSITE:www.jdsu.comWORLDWIDE:+800 5378-JDSU
SMF-28 and Fujikura SM-15-P-8/125-UV-400 are registered trademarks of Corning Incorporated.
Telcordia is a trademark of Telcordia Technologies, Inc.
All statements, technical information and recommendations related to the products herein are based upon information believed to be
reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any
inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its application. JDSU reserves
the right to change at any time without notice the design, specifications, function, fit or form of its products described herein, including
withdrawal at any time of a product offered for sale herein. JDSU makes no representations that the products
herein are free from any intellectual property claims of others. Please contact JDSU for more information. JDSU and the JDSU logo are
trademarks of JDS Uniphase Corporation. Other trademarks are the property of their respective holders. ©2005 JDS Uniphase
Corporation. All rights reserved. 10116234 Rev. 002 10/05 25BRBMOD.DS.CC.AE
4
Ordering Information
For more information on this or other products and their availability, please contact your local JDSU account manager or
JDSU directly at 1-800-498-JDSU (5378) in North America and +800-5378-JDSU worldwide or via e-mail at
customer.service@jdsu.com.
Sample: 21044597
2.5 GB/S BIAS-READY MODULATOR
BUTTERFLY PACKAGE
Product Code Description
21044597 2.5 Gb/s modulator with FC/SPC optical connectors
21044598 2.5 Gb/s modulator with no optical connectors
Note: Other connectors available upon special request. Call JDSU for more information.
