Poled fiber, a method of fabricating the poled fiber, and a dispersion compensator

• Main Authors: KIM JONGBAE, PARK SAHNGGI, CHOI YONGGYU, JU JUNGJIN
• Format: Patent
• Language: English
• Published: 23.10.2003
• Edition: 7
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention includes a poled fiber using the second-order nonlinear optical phenomenon, a method of fabricating the poled fiber, and a dispersion compensator to compensate for the chromatic dispersion of an optical fiber. The method of fabricating the poled fiber according to the present invention comprises, a step of covering an etching-resistant material on the portions of the cladding excluding the portions to be grooved in the longitudinal direction of the fiber, a step of etching the bare portions of the cladding excluding the portions covered with the etching-resistant material, a step of evaporating electrodes on the etched portions, and a step of applying voltage to the evaporated electrodes. According to the fabrication method of the poled fibre as described above, along with the use of a general optical fibre instead of a special fiber, since the distance between electrodes around the core can be appropriately controlled, a high electro-optic coefficient can be induced to the poled fibre.