Title :
Measurement of nonlinear refractive index of optical fiber using Sagnac interferometer
Author :
Jeong, Ho Jin ; Hankyo Seo ; Lee, Young Tark ; Kim, Wmnha ; Shin, Keysoo ; Jeong, Kitae
Author_Institution :
Access Network Lab., Korea Telecom, Taejeon, South Korea
Abstract :
The phase shift induced by cross phase modulation is measured using a Sagnac interferometer. The CW pumping beam less than 10 mW is intensity modulated with frequency f/sub 1/, and the interferometer is phase modulated with frequency f/sub 2/ different from f/sub 1/. In the RF spectrum of the Sagnac interferometer signal, a component of frequency f/sub 1/+f/sub 2/ is proportional to the optical nonlinear effect.
Keywords :
frequency modulation; intensity modulation; light interferometry; optical fibre testing; optical modulation; phase modulation; refractive index measurement; 10 mW; CW pumping beam; RF spectrum; Sagnac interferometer; cross phase modulation; frequency component; frequency modulation; intensity modulation; interferometer; nonlinear refractive index; optical fiber; optical nonlinear effect; phase modulation; phase shift; Frequency modulation; Intensity modulation; Laser excitation; Optical fibers; Optical interferometry; Optical modulation; Phase measurement; Phase modulation; Refractive index; Sagnac interferometers;
Conference_Titel :
Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference
Conference_Location :
Beijing, China
Print_ISBN :
7-5635-0402-8
DOI :
10.1109/APCC.1999.820530
