The Model OTOT-EM55XL 1550nm High Performance Externally Modulated Optical Transmitter is a high performance, dual optical output transmitter for analog and digital CATV signals and digital data. A continuous-wave (CW), 1550nm low RIN, high power, DFB source laser is used in conjunction with a Mach-Zendher lithium niobate electro-optic modulator, where the light is intensity modulated by the RF input signal. This external modulation technique produces a very low chirp signal which allows robust, high quality 1550nm transmission over conventional 1310nm non-dispersion shifted fiber such as SMF-28. The OTOT-EM55XL offers variable SBS suppression to +19dBm, bandwidth from 48-1,000MHz and a sophisticated SNMP & web software interface. The Model OTOT-EM55XL is available in DWDM ITU wavelengths and has the unique ability to tune the DWDM channel ±100GHz from the front panel.
When combined with EDFA optical amplifiers, such as the LaserLite Model OTEB-x or LaserPlus Model LP-OA-x, the Model OTOT-EM55XL allows system operators to cost-effectively transport a full slate of wideband video and data services over very long distances, or alternatively allows them to distribute signals to many remote optical receiver/node locations, by utilizing the lower fiber attenuation characteristic of the 1550nm optical window. The Model OTOT-EM55XL operates with optical receiver/node products, including MetroNode Model OTMN-x and PremiseNode Model OTPN-x product families, but is also designed to operate seamlessly with optical transmitters, receivers and nodes from most leading manufacturers.