We propose and demonstrate a novel wideband tunable OEO.
The key novelty is a combination of an OC, a MZM , a PBS, and a TODL, which form a CPS-DSB system.
By the joint operation of the CPS-DSB system and a CFBG, a MPF is constructed.
Adjusting the TODL, the central frequency of the MPF is shifted and the oscillation frequency can be tuned.
The proposed OEO was experimentally validated.