Tunable Transmitter Modules
There are two types of tunable transmitter modules that are available. The physical design of the module is the same. The difference between these tunable transmitters is in the design of the Mach-Zehnder modulator. There is a chirped version and a zero chirp version. The zero chirp version has higher OSNR performance and is generally more suitable for metro-core and long haul applications. Typical bit error rates for the zero chirp tunable transmitter are < 1 dB penalty for ± 1000 ps/nm at 10-12 error rate. The chirped version is designed for metro applications where there are not many concatenated amplifiers but there is a need for longer reach. Typical bit error rates for the chirped tunable transmitter are < 2 dB penalty for - 1600 ps/nm at 10-12 error rate.
| Solutions | Applications | Key Characteristics | Key Differentiators | |||||
|---|---|---|---|---|---|---|---|---|
| Tunable Transmitter Modules | Edge | Metro | Long Haul | Power | Frequency Stability | a Chirp | Chromatic Dispersion | |
| TTA Zero Chirp |  |
|
|
2.5 mW | ±2.5 GHz EOL | < ± 0.1 | ± 1000 ps/nm | Simple I2C control/monitoring |
| TTA Chirped | |
|
2.5 mW | ±2.5 GHz EOL | Adjustable | ± 1600 ps/nm | Simple I2C control/monitoring | |