Compact, low cost optical transmitter
Published: Jan. 14, 2015
In addition to the clock synthesizer, dual-channel BPG and dual-channel EA, an optical transmitter (EO converter) is now available for component and module testing.
SHF 46120 A
This compact instrument, the SHF 46120 A, supports both 1300 and 1510 nm industry standard wavelength bands (O- and C-bands) with low insertion loss of less than 5 dB. Its other key features include:
- Data rates from 1 to 44 Gbps ASK (OOK) modulation,
- Automatic bias control for modulator stability,
- Adjustable extinction ratio via input data amplitude control,
- PAM capable,
- External interference injection for optical stress eye generation.
Combining the jitter injection capability of the clock synthesiser, adjustable output amplitude and pre-emphasis feature of the BPG, and now the broad band optical transmitter, the set up can support a comprehensive range of stress tests required for 100G modules and components.
An example of the output eye pattern is shown below:
44 Gbps output signals from a SHF 46120 A without interference (left) and with interference (right)