1. An optical coherence tomography apparatus, comprising: a first optical fiber ( 201 ), comprising a first fiber tip ( 1 ) thereof; a second optical fiber ( 202 ), comprising a second fiber tip ( 2 ) thereof displaced from said first fiber tip ( 1 ) substantially in a fiber tip plane ( 71 ) substantially normal to an optical axis ( 72 ) of said apparatus; and a phase delay (x module ( 102 ) introducing a relative phase delay between said first optical fiber ( 201 ) and said second optical fiber ( 202 ); wherein: adjustment of said phase delay φ y module ( 102 ) enables scanning of an object ( 122 ) in a direction parallel to the displacement between said first fiber tip ( 1 ) and said second fiber tip ( 2 ).