Results 101 to 110 of about 451 (139)

Theory of nonlinear loop mirrors with twisted low-birefringence fiber

Journal of the Optical Society of America B, 2001
We analyze propagation in a nonlinear, birefringent optical fiber with twist. The results show that the polarization evolution is periodic, and they are applied to the analysis of a Sagnac interferometer. The period is calculated by using perturbation theory, and we find a condition for it to be independent of the initial polarization state.
Eugene A. Kuzin, Nikolai Korneev, Joseph W. Haus, Baldemar Ibarra-Escamilla   +3 more
openaire   +1 more source

Chromatic dispersion monitoring technique using birefringent fiber loop

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference, 2006
A chromatic dispersion monitoring technique using birefringent fiber loop is proposed. An unambiguous measurement range of 1500-ps/nm for 10-Gb/s NRZ signal is demonstrated without transmitter modification. This technique can be used to monitor multiple channels.
null Yuen-Ching Ku, null Chun-Kit Chan, null Lian-Kuan Chen   +2 more
openaire   +1 more source

Nonlinear Optical Loop Mirror with a Twisted Fiber and Birefringence Bias

2006 European Conference on Optical Communications, 2006
We examine the transmission characteristics in a symmetrical NOLM using a highly twisted fiber, and a quarter-wave (QW) plate in the loop. The QW plate adjustment enables tuning the critical power over a wide range.
B. Ibarra-Escamilla, O. Pottiez, E. A. Kuzin, J. W. Haus, R. Rojas-Laguna, P. Zaca-Moran, R. Grajales-Coutino   +6 more
openaire   +1 more source

Polarization properties of nonlinear optical loop mirror with twisted fiber and birefringence bias in the loop

SPIE Proceedings, 2006
The nonlinear optical loop mirror (NOLM) is used in application like optical switching and demultiplexing, all-optical active mode locking, passive mode locking, pedestal suppression, pulse shaping, etc. This device offers a versatile way to obtain a nonlinear transmission behavior through the nonlinear differential phase shift between the two ...
Baldemar Ibarra-Escamilla, Eugene A. Kuzin, Plácido Zaca-Morán, Rubén Grajales-Coutiño, Francisco Méndez-Martínez, Olivier Pottiez, Joseph W. Haus, Roberto Rojas-Laguna   +7 more
openaire   +1 more source

Analysis of the nonlinear optical loop mirror with feedback and low-birefringence twisted fiber in the loop

SPIE Proceedings, 2004
The dynamical behavior of the nonlinear optical loop mirror (NOLM) with feedback and low birefringence twisted fiber in the loop is examined. It is found that the output of the NOLM with feedback depends on many parameters, including the fiber beat length, the polarization state of the counter-propagating beams in the loop, as well as the length, twist
Clark A. Merchant, Alan L. Steele
openaire   +1 more source

Sensitivity-enhancing scheme of a polarimetric heterodyne sensor using a birefringent fiber loop

Optics Letters, 1990
In order to improve the sensitivity of a fiber-optic polarimetric sensor, a new scheme utilizing a birefringent fiber loop with midloop frequency shifters is proposed. In this scheme, heterodyne signals with an integral multiple-phase sensitivity can be obtained in the frequency domain.
K, Arai, N, Honda, T, Mori, K, Iiyama, K, Hayashi, Y, Ida   +5 more
openaire   +2 more sources

Soliton logic gate using low-birefringence fiber in a nonlinear loop mirror

Optics Letters, 1995
We demonstrate, using numerical simulations, a new all-optical logic gate that combines the mechanisms of soliton dragging and nonlinear-optical loop mirrors (NOLM’s). The design uses specially wrapped low-birefringence polarization-maintaining fiber, which we recently demonstrated in the NOLM configuration.
G R, Williams, M, Vaziri, K H, Ahn, B C, Barnett, M N, Islam, K O, Hill, B, Malo   +6 more
openaire   +2 more sources

The temperature sensitivity of fiber loop mirror based on the pressure-induced birefringence in singlemode fiber

SPIE Proceedings, 2010
A fiber-optic temperature sensor based on a pressure-induced birefringence singlemode fiber (SMF) loop mirror is developed. The pressure-induced birefringence singlemode fiber is made by applying a force against a short section of length of a singlemode fiber. The length of the sensing element for the temperature sensing is about 50 mm.
Yu Zhao, Yongxing Jin, Jianfeng Wang, Xinyong Dong   +3 more
openaire   +1 more source

An all-fiber electric voltage sensor based on high-birefringence fiber loop mirror

SPIE Proceedings, 2005
In this paper, an all-fiber electric voltage sensor based on high birefringence fiber loop mirror is presented. This voltage sensor is composed of a 3dB coupler and ~8m high birefringence (HiBi) fiber, part of which is affixed to a piezoelectric translator (PZT).
Hao Zhang, Bo Liu, Lingyun Xiong, Ling Yu, Qingying Dou, Shaohua Chen, Yange Liu, Lihui Liu, Shuzhong Yuan, Xiaoyi Dong   +9 more
openaire   +1 more source

A fiber Bragg grating demodulation system using high-birefringence fiber loop mirror

SPIE Proceedings, 2014
In this paper, a fiber Bragg grating (FBG) demodulation system based on high-birefringence fiber loop mirror (Hi-Bi FLM) is proposed and demonstrated. The approximate linear edge of the transmittance of the Hi-Bi FLM, which is a sinusoidal function of wavelength, is used to interrogate the sensing FBGs. The relationship between the wavelength period of
Shuyang Hu, Chuan He, Dong-mei Bai
openaire   +1 more source