A cutting apparatus (1, 2) to cut a coating of a grooved tight buffered fiber, the tight buffered fiber having a longitudinal axis, comprising: - a body comprising a hole to insert the tight buffered fiber, - a cutting device to cut the coating of the tight buffered fiber, - an opening extending from an outer surface of the body to the hole, - wherein, when the tight buffered fiber is inserted in the hole, the cutting apparatus (1, 2) is configured to be disposed around the tight buffered fiber in a first state and a second state, - wherein, in the first state of the cutting apparatus, the cutting apparatus (1, 2) is disposed rotatably around a longitudinal axis of the tight buffered fiber, and the cutting device is configured to slide over a surface of the tight buffered fiber - wherein, in the second state of the cutting apparatus, the rotational movement of the cutting apparatus (1, 2) around the longitudinal axis of tight buffered fiber is blocked and the cutting apparatus (1, 2) is disposed movably in a direction parallel to the longitudinal axis of the tight buffered fiber, and the cutting device is configured to engage into a groove of the tight buffered fiber and to cut the coating of the tight buffered fiber by moving the cutting apparatus (1, 2) in the direction parallel to the longitudinal axis of the tight buffered fiber, - wherein the cutting device is disposed in the opening, and comprises a blade, and is arranged in the opening movably between a first position in which the blade is disposed outside the hole and a second position in which the blade penetrates into the hole, - wherein the cutting device comprises a plunger coupled to the blade, the plunger projecting out of the opening, and the cutting device is configured to be moved from the first position to the second position by pressing the plunger into the opening, - wherein the opening comprises a first section and a second section being in contact with each other, characterized in that the first section has a narrower diameter than the second section, and the blade is guided within the first section of the opening and the plunger is guided within the second section of the opening, when the cutting device is moved from the first position to the second position, wherein the second section of the opening comprises a first end (E122a) coupled to the surface of the body and a second end (E122b) coupled to first section of the opening, and the second end (E122b) of the second section is formed as an arrestor which limits the intrusion of the blade into the hole, when moving the cutting device from the first position to the second position, such that, when the tight buffered fiber is inserted in the hole, the blade of the cutting apparatus cuts a coating of the tight buffered fiber in a radial direction of the tight buffered fiber, when the plunger hits the arrestor. - a body comprising a hole to insert the tight buffered fiber, - a cutting device to cut the coating of the tight buffered fiber, - an opening extending from an outer surface of the body to the hole, - wherein, when the tight buffered fiber is inserted in the hole, the cutting apparatus (1, 2) is configured to be disposed around the tight buffered fiber in a first state and a second state, - wherein, in the first state of the cutting apparatus, the cutting apparatus (1, 2) is disposed rotatably around a longitudinal axis of the tight buffered fiber, and the cutting device is configured to slide over a surface of the tight buffered fiber - wherein, in the second state of the cutting apparatus, the rotational movement of the cutting apparatus (1, 2) around the longitudinal axis of tight buffered fiber is blocked and the cutting apparatus (1, 2) is disposed movably in a direction parallel to the longitudinal axis of the tight buffered fiber, and the cutting device is configured to engage into a groove of the tight buffered fiber and to cut the coating of the tight buffered fiber by moving the cutting apparatus (1, 2) in the direction parallel to the longitudinal axis of the tight buffered fiber, - wherein the cutting device is disposed in the opening, and comprises a blade, and is arranged in the opening movably between a first position in which the blade is disposed outside the hole and a second position in which the blade penetrates into the hole, - wherein the cutting device comprises a plunger coupled to the blade, the plunger projecting out of the opening, and the cutting device is configured to be moved from the first position to the second position by pressing the plunger into the opening, - wherein the opening comprises a first section and a second section being in contact with each other,