hello, dhananjay patel
As far as electrical digital samples in optiwave optisystem library is concerned, all the systems working correctly. Can you please elaborate what kind of issues you are facing with these samples? As there are few examples on different electrical modulations specifically which of them you found working incorrectly? Also, as alessandro said which version of optisystem you are using? Attach the file OR screenshot to clear what you are asking about malfunctioning of optisystem samples.