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The 1241/1243/1245-type Laser Transmitters are designed for use in transmission systems and high-speed data communication applications. Used in intraoffice and intermediate-reach applications, the transmitters are configured to operate at SONET rates up to OC-12, as well as at ITU-T synchronous digital hierarchy (SDH) rates up to STM-4. Specific versions are also capable of operating up to 1062.5 Mbits/s.
The transmitter meets all present Bellcore GR-253-CORE requirements, ANSI T1.117-1991 SONET single-mode, and the ITU-T G.957 and G.958 recommendations. (See Table 5 to select transmitters for the various SONET/SDH segments.)
1241 Maximum Ratings
Parameter
Symbol
Min
Max
Unit
Supply Voltage*
-
-
5.5
V
Operating Case Temperature Range†
TC
40
85
°C
Storage Case Temperature Range
Tstg
40
85
°C
Lead Soldering Temperature/Time
-
-
250/10
°C/s
Relative Humidity (noncondensing)
RH
-
85
%
Minimum Fiber Bend Radius
-
-
in. (mm)
1241 Features
Backward compatible with 1227/1229/1238-Type Laser Transmitters Space-saving, self-contained, 20-pin DIP Uses field-proven, reliable InGaAsP MQW laser Requires single 5 V power supply SONET/SDH compatible Uncooled laser with automatic optical power con- trol for constant output power over case tempera- ture range No thermoelectric cooler required; reduces size and power consumption Uses low-power dissipation CMOS technology Qualified to meet the intent of Bellcore reliability practices Operates over data rates to 1062.5 Mbits/s (NRZ) Operation at 1.3 µm or 1.55 µm wavelength Typical average output power options of 11 dBm, 8 dBm, 5 dBm, 2 dBm, and 0 dBm ECL compatible, differential inputs Operating temperature range of 40 °C to +85 °C Transmitter-disable option
1241 Typical Application
Telecommunications Inter- and intraoffice SONET/ITU-T SDH Subscriber loop Metropolitan area networks High-speed data communications Fibre channel (FC-0)