APE Extended Frequency
Response Analog Modulator
Product Bulletin
This high performance analog modulator is
designed for use in microwave fiberoptic links
operating at frequencies to 20 GHz and beyond.
APE optical waveguides and velocity matched
transmission line technology are combined in a
modulator offering high power, low loss optic al
characteristics and high modulation efficiency. A
fiberoptic link using an AM modulator exhibits
greater than a 6 dB reduction in noise figure when
compared to a link using earlier modulator
technology , a t comparable cost. The gain and
output power requirements of associated input
preamplifiers are reduced by a factor of four ,
minimizing overall system power dissipation, size
and cost. F urther , the modulator can be driven
over full extinction at frequencies to 20 GHz and
beyond. The excellent impedance characteristic
eliminates ripples and dropouts from the fre-
quency response . The frequency response shown is
the measured electrical output power from an
ideal photodiode, referenced to the RF power
applied to the modulator (E/E). Modulators are
available for operation at both 1300 and 1550 nm
wavelengths.
Key Features
•Low drive voltage
•Frequency response, DC to 20 GHz
•Low optical insertion loss
•High optical power operation
•Passively biased to quadrature
Applications
•Antenna remoting
•Short pulse experimentation
APE Extended Frequency
Response Analog Modulator | 2
T ypical Return Loss , S11
0 5 10 15 20
S11 Response
-40
-30
-20
-10
0
Frequency in GHz
S11 (dB)
0 5 10 15 20
1550 nm, S21 (Elect-Elect)
18
20
22
24
26
28
30
Frequency in GHz
Typical Frequency Response Curve, S21
Roll-off
Freq(GHz) Max (dBe)
0.13 0
3-1
5-2
9-3
12 -4.5
18 -6
20 -7
Ppi in dBm
AM Modulator Performance Specifications
General
Material LiNbO3
Crystal orientation x-cut, y-propagating
Electrical connectors (package) SMA connectors
Fibers
1320 nm device PM input: Fujikura SM 13-P-7/125-UV/UV-400
SM output: Corning SMF 28
1550 nm device PM input: Fujikura SM 15-P-8/125-UV/UV-400
SM output: Corning SMF 28
Absolute
Input optical power 200 mW maximum
Operating temperature 0°C minimum, 70°C maximum
Storage temperature -40°C minimum, 85°C maximum
Model Description AM-150 AM-130
Optical1
Operating Wavelength (nm) 1550 ± 10 1320 ± 10
Insertion loss, maximum (dB)35.0 5.0
On/off extinction ratio, minimum (dB) 2 0 2 0
Optical return loss, maximum (dB) - 50 - 50
Electrical1
RF port
RF Input Power, maximum (dBm) + 27 + 27
VX at 1 GHz, maximum (V )26.0 5.3
Impedance, typical (Ω)5050
Bias port
VX at DC, max (V) 12 10.5
Impedance (kΩ) > 100 > 100
Zero volts bias point at 1550 nm (AM 150) to 1320 nm (AM -130) and 23 °C is quadrature ± 10 degrees 4
Notes:
1. All measurements made at 23°C unless otherwise noted.
2. VX is specified at the modulator. PX is the power required to generate VX /2 at the connector.
3. Optical loss is measured at the maximum of the modulators transfer function and does not include the 3 dB loss incurred when operated at quadrature.
4. Optimum distortion performance may require bias control.
APE Extended Frequency
Response Analog Modulator | 3
All information contained herein is believed to be accurate and is subject to change without notice. No
responsibility is assumed for its use. JDS Uniphase Corporation, its subsidiaries and affiliates, or
manufacturer, reserve the right to make changes, without notice, to product design, product components,
and product manufacuring methods. Some specific combinations of options may not be available. Please
contact JDS Uniphase for more information. ©JDS Uniphase Corporation. All rights reserved.
APE EFRAM Rev. A 12/99 Printed in USA
JDS Uniphase Corporation Tel 860 769-3000
1289 Blue Hills Avenue Fax 860 769-3001
Bloomfield, Connecticut sales.ct@us.jdsunph.com
06002 USA www.jdsunph.com
European Sales
GCA House/Building #16 Tel +44 1993 601 601
Thorney Leys Business Park Fax +44 1993 700 444
Witney, Oxon OX8 7GE
United Kingdom
Ordering information
Indicate your requirements by selecting one option from each configuration table. For more information on this or other
products and their av ailability , please contact your local JDS Uniphase sales representative or JDS Uniphase dire ctly at
860 769-3000, or by fax 860 769-3001, or via email at sales.ct@us.jdsunph.com, or visit our Web site at www.jdsunph.com.
Sample: AM-130-1-3-C2
AM-XXX-1-X-C2
code Product
AM Extended Frequency
Range Analog Modulator
XXX Wavelength
13 0 1300 nm
15 0 1550 nm
code Fber cabling
C2 900 micron loose tube
X Output fiber
1 Fujikura PM
3 Corning SM fiber
code Input Fiber
1 Fujukura PM
APE Extended Frequency
Response Analog Modulator | 4
Package dimensions
