In this research the recovery of a DQPSK signal will be demonstrated using a single Mach-Zehnder Interferometer (MZI). By changing the phase delay in one of the arms it will be shown that different delays will produce different output levels. It will also be shown that with a certain level of phase shift the DQPSK signal can be converted into four different equally spaced optical power levels. With each decoded level representing one of the four possible bit permutations. By using this additional phase shift in one of the arms the number of MZIs required for decoding can be reduced from two to one.
|Publication status||Published - Aug 2008|
|Event||1st Global COE Student Conference on Innovative Electronic Topics (SCIENT2008) - Osaka University, Osaka , Japan|
Duration: 31 Jul 2008 → 1 Aug 2008
|Conference||1st Global COE Student Conference on Innovative Electronic Topics (SCIENT2008)|
|City||Osaka University, Osaka|
|Period||31/07/08 → 1/08/08|
- DQPSK signal
- single Mach-Zehnder Interferometer
- phase delay
- phase shift
- optical power levels
Johnson, N., Nissanka, S. M., Eberhard, M. A., & Maruta, A. (2008). Recovery of multiple amplitude levels from a DQPSK NRZ signal using a single Mach-Zehnder Interferometer. AMP-14. Poster session presented at 1st Global COE Student Conference on Innovative Electronic Topics (SCIENT2008), Osaka University, Osaka , Japan.