a8e
re
systems
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Data
Sheet
August
2002
Features
"Ti-diffusion
process
"
Single-drive
technology
"
C-
and
L-band
models
"
Slim,
hermetic
package
"
Bandwidths up
to
10
GHz
"
0
.7
chirp
operation
"
Operational
over
a
temperature
range
of
0
°C
to
70
°C
"
43
0
design
for
minimal
electrical
reflections
"
Angled
interfaces
for
minimal
optical
reflections
"
Integrated
optical
attenuator
available
on
10
Gbits/s
modulator
(2623CSA)
The
Lithium
Niobate
Modulators
include
three
single-drive
modulators
(2623N, 2623Y,
2623CS)
and
a
single-drive
modula-
"
Tested
to
Te1COrd18
Technologies
T"^
468
for
with
an
integrated
attenuator
(2623CSA)
.
All
devices
are
capable
of
modulation
rates
up
to
10
Gbits/s
.
Benefits
"
Excellent
long-term
bias
stability
"Internal
polarizer
"
Low
modulation
voltages
Applications
"
Digital
high-speed
telecommunications
:
-
SONET
.
OC-1
through
OCA
92
-
SDH
:
STMA6,
STM-64
-
Undersea
communications
"
Internet
data
communications
"
SONET/SDH
test
equipment
AdLib OCR Evaluation
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Data
Sheet
August
2002
Description
The
10
Gbits/s
Electro-Optic
Modulator
is
designed
for
long-wavelength,
single-mode
external
amplitude
mod-
ulation
applications
.
It
uses an
integrated
Mach-
Zehnder
configuration
to
convert
single
polarization
CW
light
from a
semiconductor
(DFB)
laser
into
a
time-
varying
optical
output
signal
.
AgereSystems
Inc
.
also
offers
a 10
mW
CW
laser
with
polarization-maintaining
fiber
(D2525P)
to
use as a source
for
the
modulator
.
The
Ti-diffusion
process
is
a
standard
feature
on
all
modulator
devices
.
The
2623N,
2623Y
and
2623CS
are
single-drive,
10
Gbits/s
modulators
;
the
2623CSA
Absolute
Maximum
Ratings
is
a
single-drive,
10
Gbits/s
modulator
with
an
attenuat-
ing
section
.
Variable
attenuation
to
>19
dB
is
achieved
through
a do
bias
voltage
.
The
package
is
hermetic
to
protect
the
LiNb03
die
from
the
environment
.
Novel
processing techniques
now
make
it
possible
to
achieve 20-year
operation
with
little
drift
in
the
do
bias
point
.
The
modulator
is
tested
to
and
meets
the
intent
of
TR-NWT-00468
.
Other
standard
features
include
PANDA-type
polariza-
tion-maintaining
fiber
(PMF)
for
the
optical
input
(all
codes)
and
output
(2623N,
2623Y
and
2623C)
fiber
with
FC-type
connectors
that
are
keyed
to
the
axis
of
polarization
.
Custom
designs
are
available
.
Stresses
in
excess
of
the
absolute
maximum
ratings
can
cause
permanent
damage
to
the device
.
These
are
abso-
lute
stress
ratings
only
.
Functional
operation
of
the 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
maximum
ratings
for
extended
periods
can
adversely
affect
device
reliability
.
Parameter
Symbol
Min
Max
Unit
Storage
Temperature
Tst9
-40
85 °C
Optical
Input
Power
at
1
.5
gm
PIN
-
30
mW
RF
Voltage
(peak
to
peak)
VRF
-
10
V
do
Voltage
(RF
input)
VdCRF
-20
20
V
do
Voltage
(Attenuator
input)
Vdcarr
-25
25
V
Operating
Temperature
Top
0 70 °C
2
AgereSystems
Inc
.
AdLib OCR Evaluation
Data
Sheet
August
2002
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Optical/Electrical
Characteristics
Table
1
.
Optical/Electrical
Characteristics
Parameter
Min
Typ
Max
Unit
Operating
Wavelength
:
C-band
L-band
1525
1565
-
-
1565
1620
nm
nm
Insertion
Loss
:
2623N,
2623Y2623CS
2623CSA
3
3
.5
3
.7
4
.5
5
.5
6
.5
dB
dB
Extinction
Ratio
at
do 20 27
-
dB
Extinction
Ratio
at
RF
12
- -
dB
S11
Optical
Return
Loss
-
-
-35
dB
Bandwidth* 8
10
-
GHz
Drive
Voltage
(VTc)
at
do 2
.8
3
.1
4
.0
V
Drive
Voltage
(VTc)
at
1
GHz
3
.5
4
.1
5
.0
V
Attenuation
Voltage
at-19
dB
15
19
22
V
Electrode
Impedance
-
43
-
0
S11
Electrical
Return
Loss
(0
.13
GHz-5
GHz)
-
-15 -13
dB
S11
Electrical
Return
Loss
(5
GHz-10
GHz)
-
-14
-12
dB
S11
Electrical
Return
Loss
(10
GHz-18
GHz)
I
-
I
-8
I
-6
I
dB
"
Bandwidth
stated
is
electrical-optical-electrical
as
determined
by
the
ratio
of
the
received
RF
electrical
power
(at
a
photodiode)
relative
to
the
RF
electrical
power
used
to
drive
the
modulator
.
This
response
is
referenced
to
the
value
at
130
MHz
.
do
BIAS
CONTROLLER
SEE
NOTE
.
'
PHOTODETECTOR/
I I
PREAMP
SPEED
MODULATOR
BIAS
I
ATTENUATION
I
DATA
DRIVER
TEE
I
CONTROLLER
INPUT
~I
10
I
-~f
I I
I I
`
---- ----
PMF
CW-LASER
2623N,2623Y,2623CS,2623GSA
Note
:
Circuitry
in
dotted
lines
is
used
only with
the
2623CSA
.
SPUTTER
1-1062
(F)
Figure
1
.
Recommended
Operating
Circuit
Diagram
tEE2623N,2623Y,2623CS
t~0
.2
wF
_
-10 pF
2623CSA
Figure 2
.
Equivalent
Circuit
Diagram
1-1063
(F)
AgereSystems
Inc
.
3
AdLib OCR Evaluation
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
0
Optical/Electrical
Characteristics
(continued)
Electrical
Signal
Input
Electrical
signal
input
is
made
through
SMA
coaxial
connectors
.
The
standard
device
includes
an
internal
termina-
tion
network
.
Care
must
be
taken
not
to
exceed
the
recommended
8
in ./Ib
.
of
torque
when
making
connections
to
these
inputs
.
High-frequency
coaxial
cable
is
recommended
.
Characteristic
Curves
CH1
E/O
LOG
MAG
dB/
REF
-55
.48
dB
1
:
-55
.846
dB
W/A
dBe
COR
AVG
4
v
SMA
HID
v
w
O
d
1
.130
000 000
GHz
2
476
dB
-55
. .
0
.9248
GHz
476
dB
3
-58
. .
9
.9690
GHz
4 -61
766
dB
2
. .
18
.76
48
GHz
3
4
START
.130
000 000
GHz
STOP
20
.000
000 000
GHz
FREQUENCY
1-1058(F)
Figure 3
.
Magnitude
of
Electro-Optic
Response,
0
.130
GHz-20
GHz
.
CH1
S11
LOG
MAG
5 dB/
REF
0
dB
1
:
-18
.896
dB
dBe
COR
v
HID
<Y
w
O
0-
1
.
924
000
000
GHz
2
.
-15
.278
dB
3
.7006
GHz
3
.
-16
.27
dB
5
.0975
GHz
4
.
-8
.7734
dB
14
.7344
GHz
4
1
2 3
1,
V1
START
.130
000 000
GHz
STOP
20
.000
000 000
GHz
FREQUENCY
1-1059(F)
Figure
4
.
S11,
0
.130
GHz-20
GHz
-10
m
v
H
-20
w
O
a
J
-30
Q
U
H
d
O
-40
-501
I
-20
Data
Sheet
August
2002
-10
0 10 20
MODULATOR
do
BIAS
VOLTAGE
(V)
1-1060(F)
Figure 5
.
Output
Power
vs
.
Bias Voltage
0
-10
m
-20
w
a
-30
J
Q
U
a
-40
O
-50
-60
1
1
1 1
1
1 1
1
1 1
1
1
1
1 1
1
J
-40
-30 -20
-10
010 20
30 40
ATTENUATOR
BIAS
VOLTAGE
(V)
START
=
-23
.98
V
STOP
=
25
.58
V
1-1061
(F)
Figure 6
.
Optical
Power
vs
.
Attenuator
Bias Voltage
Agere
Systems
Inc
.
AdLib OCR Evaluation
Data
Sheet
August
2002
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Outline
Diagrams
Dimensions
are
in
inches
and
(millimeters)
.
2623N,
2623Y,
2623CS
Lithium Niobate
Modulators
SMA
SHORTING
FIELD-REPLACEABLE
SMACONNECTOR
-
INPUT
1
.20
(30
.5)
0
.20(5
.1)
-
IA06686
96I
Agere
Electro-Optic
Modulator
Sode
I
/N
2O
M
BEND
LIMITER
2PLACES
0
.14
(3
.6)
FC/PC
CONNECTOR
OPTIONAL
2PLACES
1 .5
METER
MAXIMUM
0
.60
(15
.2)
4
.64
(117
.9)
LOOSE-TUBE
JACKETED
FIBER
2
PLACES
"
2623N
S/N
XXXX
A0668698
014097001
0
.39
0
.20
t
(9 .8) (5
.11)
0
.32(8
.1)
-
4
.00
(101
.6)
2
.00 (50
.8)
0
.09
(2
.2)
I
-1
F_
i
0
.43
(10
.8)
L
1
.53
(38
.9)
#4-40
UNC
2B
0
.12
(3 .05)
DEEP
MIN,
6
PLACES
1-1064(F)a
Agere
Systems
Inc
.
AdLib OCR Evaluation
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Data
Sheet
August
2002
Outline
Diagrams
(continued)
2623CSA
Lithium
Niobate
Modulator
ATTENUATOR
PIN
#
1
SMA
SHORTING
CAP
ATTENUATOR
PIN #2
1
.20
FIELD-REPLACEABLE
(30
.5)
SMA
CONNECTOR
0.20(5
.1)
-
INPUT
i
Aossas
sa
Model
2623CSA
Agere
Electro-Optic
Modulator
S/N
Xxxx
O
\
0
.14
(3
.6)
BEND
LIMITER
2PLACES
FC/PC
CONNECTOR
OPTIONAL
2PLACES
4
.64
(117
.9)
I
2623CSA
S/N
XXXX
A0668698
014097001
"
I
0
.32
(8
.1)
4
.00
(101
.6)
2
.00
(50
.8)
0
.09
(2
.2)
-1
I
F
I
0
.43
(10
.8)
L
1
.53
(38
.9)
1
.5
METER
MAXIMUM
0
.60
(15
.2)
LOOSE-TUBE
--w
JACKETED
FIBE
`R
2
PLACE
IIS
0]CRO
.39
0
.20
(9
.8)
(5
.11)
#4-40
UNC
2B
0
.12
(3
.05)
DEEP
MIN,
6
PLACES
1-1064Fc
6
Agere
Systems
Inc
.
AdLib OCR Evaluation
Data
Sheet
August
2002
10
Gbits/s
Lithium
Niobate
Electro-Optic
Modulator
Package
Information
Designed
to
NEBS
(inside
plant)
standards,
the
hermetic
package
design
incorporates
a
laser-sealed
lid
and
sol-
dered
fibers
.
The
minimum
bend
radius
for
the
fiber
is 1
.5
in
.
To
prevent
warping,
use
only
the
two
center
screws
to
mount
the device
.
Table
2
.
Package
Information
Description
Type
Input
Optical
Fiber
(all
codes)
PANDA-type
PMF
Output
Optical
Fiber
:
2623N,
2623Y2623CS
2623CSA
PANDA-type
PMF
Standard
single-mode
Fiber
Connector
FC
Fiber
Length
1
.5
m
max
RF
Connector
SMA
Package
Dimensions
I
See
Outline
Drawings,
page
5,
6
.
Ordering
Information
Table
3
.
Device
Information
Part
Number
Minimum
Bandwidth
(G
Hz)
Attenuator
C-Band
L-Band
Comcode
2623N
8
No
Yes Yes
1077393100
2623Y
9
No
Yes Yes 108864604
2623CS
10
No
Yes Yes
107862823
2623CSA
I
8
I
Yes
I
Yes
I
Yes
I
108433954
Agere
Systems
Inc
.
7
AdLib OCR Evaluation
Telcordia
Technologies
is
a trademark
of
Telcordia
Technologies,
Inc
.
For
additional
information,
contact your
Agere
Systems
Account
Manager
or
the
following
:
INTERNET
:
http
://www
.agere
.com
E-MAIL
:
docmaster@agere
.com
N
.
AMERICA
:
Agere
Systems
Inc
.,
555
Union
Boulevard,
Room
30L-15P-BA,
Allentown,
PA
18109-3286
1-800-372-2447,
FAX
610-712-4106
(In
CANADA
:
1-800-553-2448,
FAX
610-712-4106)
ASIA
:
Agere
Systems
Hong
Kong
Ltd
.,
Suites
3201
&
3210-12,
32/F,
Tower
2,
The
Gateway,
Harbour
City,
Kowloon
Tel
.
(852)
3129-2000,
FAX
(852)
3129-2020
CHINA
:
(86)
21-5047-1212
(Shanghai),
(86)
755-25881122
(Shenzhen)
JAPAN
:
(81)
3-5421-1600
(Tokyo),
KOREA
:
(82)
2-767-1850
(Seoul),
SINGAPORE
:
(65)
6778-8833,
TAIWAN
:
(886)
2-2725-5858
(Taipei)
EUROPE
:
Tel
.
(44)
7000
624624,
FAX
(44)
1344
488
045
Agere
Systems
Inc
.
reserves
the
right
to
make
changes
to
the
product(s)
or
information
contained
herein
without
notice
.
No
liability is
assumed
as a
result
of
their
use or
application
.
Agere,
Agere Systems,
and
the
Agere
logo
are
trademarks
of
Agere
Systems
Inc
.
Copyright
©
2002
Agere
Systems
Inc
.
All
Rights
Reserved
s
y
s
tems
August
2002
a
'ere
DS02-350OCN
(Replaces
DS00-331
OPTO-2)
8
AdLib OCR Evaluation
