My way to fight the ticket would be (OC, Westminster Justice Center)
1) Send a Trail by declaration form pleading not guilty. There is some templates on the net to show you basic defense.
If the judge find you guilty, you can ask for a Trail de Novo (form) and be at the trial hoping the officer is not present.
2) Ask for a discovery request from the city attorney (traffic survey, liddar calibration, etc). Also there're basic template for those. Make sure to send it w/ return receipt to have proof at court.
I got 2 tickets dismissed by the city for my friends because the police officer didn't bother to answer the trial by declaration (not present at court).
Also, if the city doesn't respond to (2), you can ask the judge to dismiss the case at your trial. Some judge allows the officer to present the docs you demand at trial, you can try to ask for a continuance since they didn't answer the discovery request according to the laws and have another try.
Gluck.

