Ferrule connection type optical isolator with optical fiber

A ferrule connection type optical isolator with an optical fiber, wherein the optical isolator comprises a ferrule in which at least one processed end surface of an optical fiber consists of two kinds of materials and which has a concentric level difference between the different kinds of materials, a guide panel having a processed end of a size larger than the outer diameter of the level difference portion but smaller than the outermost diameter of the ferrule on the ferrule side is disposed on the level difference portion, which guide panel is positioned by the ferrule level difference when it is connected and fixed and serves as means for compensating the level difference, a magnet is connected and fixed on a side of the guide panel opposite to the side on which the ferrule is connected, the magnet has a cylindrical pocket having an inner diameter larger than the outermost diameter of the optical element or square prismatic pocket for inserting the optical element, and the optical element is fixed in the magnet.

A ferrule connection type optical isolator with an optical fiber, wherein the optical isolator comprises a ferrule in which at least one processed end surface of an optical fiber consists of two kinds of materials and which has a concentric level difference between the different kinds of materials, a magnet having a shoulder with two inner diameters including a first inner diameter larger than the outer diameter of the level difference portion and smaller than the outermost diameter of ferrule and a second inner diameter larger than the outer diameter of an optical element to be inserted is fitted and fixed on the level difference portion, and an optical element that comprises at least one polarizer and at least one Faraday rotator is connected and fixed in a portion having the second diameter.

A ferrule connection type optical isolator with an optical fiber, wherein the optical isolator comprises a ferrule in which at least one processed end surface of an optical fiber consists of two kinds of materials and which has a concentric level difference between the different kinds of materials, a part having a shoulder with two inner diameters including a first inner diameter larger than the outer diameter of the level difference portion and smaller than the outermost diameter of ferrule and a second inner diameter larger than the outer diameter of an optical element to be inserted is fitted and fixed on the level difference portion, and an optical element that comprises at least one polarizer and at least one latching type Faraday rotator is connected and fixed in a portion of the part having the second diameter.

A ferrule connection type optical isolator with an optical fiber, wherein the optical isolator comprises a ferrule in which at least one processed end surface of an optical fiber consists of two kinds of materials and which has a concentric level difference between the different kinds of materials, an optical element having an outermost diameter smaller than the outer diameter of the level difference portion is positioned with respect to the ferrule and fixed on the level difference portion by using a jig, and thereafter a magnet having an inner diameter larger than the outer diameter of the level difference portion is connected and fixed to the level difference portion by utilizing the level difference.