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Data Sheet
1340-Type Lightwave Receiver
January 2000
2
Lucent Technologies Inc.
Description (continued)
The SONET/SDH versions of the receiver are fully
compliant with the latest issue of
Telcordia Technolo-
gies GR-253- CORE and the most recent issues of ITU
recommendations G.957 and G.958. The 1340-Type
receiver requires only a single 5 V power supply for
operation. All versions of the receiver are characterized
for operation over the case operating range of –40
°C
to +85
°C at the appropriate data rate for each version.
Manufactured in a 20-pin DIP, the receivers use a pla-
nar, rear illuminated InGaAs PIN photodetector that
allows these receivers to be used at wavelengths from
1.1
m to 1.6 m. The photocurrent output of the PIN
detector is amplied and converted to a voltage by a
silicon amplier. A silicon quantizer provides additional
signal amplication, data threshold detection, and
PECL data outputs. The incoming optical signal is cou-
pled into the receiver through a 62.5
m core multi-
mode ber pigtail. The outer jacket diameter of the
pigtail is 900
m. The receiver can be ordered with the
pigtail terminated in an FC/PC, SC, or
ST optical con-
nector. Other connectors are available on special order.
See your Lucent account representative for ordering
conditions and information.
The receiver has differential PECL data outputs and,
depending on the version selected, either differential
PECL link status ag or complementary CMOS link
status ag outputs. The link status ag outputs indicate
the presence or absence of a minimum acceptable
level of optical input signal.
1-414(C)
Figure 1. Block Diagram
FILTER
Si
PREAMPLIFIER
InGaAs
PIN
Si
COMPARATOR
FILTER
VCC
FLAG
DATA
OPTIONAL
VPIN
FLAG
DATA