914.15  Law enforcement officers; nondisclosure of personal information.--Any law enforcement officer of the state or of any political subdivision thereof who provides information relative to a criminal investigation or in proceedings preliminary to a criminal case may refuse, unless ordered by the court, to disclose his or her residence address, home telephone number, or any personal information concerning the officer's family. Any law enforcement officer who testifies as a witness in a criminal case may refuse to disclose personal information concerning his or her family unless it is determined by the court that such evidence is relevant to the case.