Data Sheet
September 1999
1241/1243/1245-Type Uncooled Laser Transmitter
Offering multiple output power options and SONET/SDH com-
patibility, the 1241/1243-Type Uncooled Laser Transmitter is
manufactured in a 20-pin, plastic DIP with a single-mode fiber
pigtail.
Features
a73 Backward compatible with 1227/1229/1238-Type
Laser Transmitters
a73 Space-saving, self-contained, 20-pin DIP
a73 Uses field-proven, reliable InGaAsP MQW laser
a73 Requires single 5 V power supply
a73 SONET/SDH compatible
a73 Uncooled laser with automatic optical power con-
trol for constant output power over case tempera-
ture range
a73 No thermoelectric cooler required; reduces size
and power consumption
a73 Uses low-power dissipation CMOS technology
a73 Qualified to meet the intent of Bellcore reliability
practices
a73 Operates over data rates to 1062.5 Mbits/s (NRZ)
a73 Operation at 1.3 µm or 1.55 µm wavelength
a73 Typical average output power options of –11 dBm,
–8 dBm, –5 dBm, –2 dBm, and 0 dBm
a73 ECL compatible, differential inputs
a73 Operating temperature range of –40 °C to +85 °C
a73 Transmitter-disable option
Applications
a73 Telecommunications
— Inter- and intraoffice SONET/ITU-T SDH
— Subscriber loop
— Metropolitan area networks
a73 High-speed data communications
— Fibre channel (FC-0)