  We present an ultra-thin hybrid imaging system based on an optical multimode
fiber (MMF) and an optical fiber hydrophone that combines optical resolution
photoacoustic and fluorescence microscopy. To control the illumination at the
distal tip of the MMF, a digital micromirror device modulates the amplitude of
the optical wavefront which is coupled into the MMF. A set of pre-calibrated
speckle illuminations combined with a reconstruction algorithm enables
photoacoustic and fluorescence imaging of samples located at the distal tip of
the fiber with optical resolution determined by the numerical aperture.
