Results 131 to 140 of about 4,199 (174)

Birefringent Fiber Loop to Improve Directly Modulated Laser Diode Pulses

2005 Pacific Rim Conference on Lasers & Electro-Optics, 2006
We describe the use of a birefringent-fiber-loop (BFL) to improve the signal from a 10Gb/s directly modulated DFB laser. The BFL reduces amplitude transients, frequency chirp and pattern dependence in the directly modulated signal.
C.W. Chow, H.K. Tsang
openaire   +1 more source

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

A pressure sensor based on high-birefringence fiber loop mirror

SPIE Proceedings, 2012
In this paper, a pressure sensor based on high-birefringence fiber loop mirror (HiBi-FLM) is proposed and demonstrated. The high-birefringence fiber is pasted to an inflated, elastic, ring shaped rubber gasbag and served as a sensitive probe. When outside pressure changes, the volume of the gas in the ring rubber gasbag changes and it makes the ...
Tiancong Xu, Shuyang Hu, Dongmei Bai
openaire   +1 more source

Sensitivity dependence of fiber loop mirror on the length of high birefringence fiber

Sensors and Actuators A: Physical, 2016
Abstract A model of fiber loop mirror with the distinct concepts of sensing length and total length is established. The sensitivity dependence of fiber loop mirror on the sensing length and total length is discussed theoretically and experimentally.
Peng Zu, Chi Chiu Chan, Ping Lam So
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Novel all-fiber variable optical attenuator based on high-birefringence fiber loop mirror

SPIE Proceedings, 2004
In this paper, we propose a novel all-fiber variable optical attenuator based on high birefringence fiber loop mirror. Part of the birefringence fiber was pasted onto an equivalent-strength beam and by applying a strain with a high precision screw thruster on the free end of the beam, we observed that the transmission spectrum of the fiber loop mirror
Hao Zhang, Yange Liu, Ling Yu, Lihui Liu, Guang Zhou, Shuzhong Yuan, Xiaoyi Dong   +6 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

All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop

Optics Letters, 1997
We demonstrate a highly sensitive temperature sensor based on a stress-induced high-birefringence-fiber Sagnac loop that uses a Nd-doped-fiber amplified spontaneous emission source. Relative temperature sensing is done in the spectral domain by shifts of a resonant wavelength lambda(r) and absolute temperature sensing by changes in separation between ...
E, De la Rosa, L A, Zenteno, A N, Starodumov, D, Monzon   +3 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

Ultralow birefringence measurement in optical fibers by use of a fiber optical loop mirror

Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013), 2003
Summary form only given. Most experimental techniques proposed to measure fiber birefringence use a section of a fiber with a length of several beat lengths. These techniques are convenient for high-birefringent fibers, but it is difficult to use them for low-birefringent fibers.
E.A. Kuzin, B.I. Escamilla, J.M.E. Ayala
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Multiwavelength generation in semiconductor-fiber ring laser using a high-birefringence fiber loop mirror

SPIE Proceedings, 2001
With adoption of wavelength division multiplexing scheme to optical communication systems, multiwavelength optical signal source has drawn considerable attention. The conventional multiwavelength sources usually consist of the same number of lasers as wavelength channels and therefore become bulky and costly.
Bong-Ahn Yu, Dong-Hwan Kim, Byoungho Lee
openaire   +1 more source