We evaluate the benefit of reconfiguration after single-link failures in supporting recovery from additional failures. We also develop an intuitive classification of two-link failures to help understand the impact of failures. c 2003 Optical Society of America OCIS codes: (060.4250) Fiber optics and optical communications/networks; (060.4510) Fiber optics and optical communications/optical comm...

Optical tweezers provide a versatile tool in biological and physical researches. Optical tweezers based on optical fibers are more flexible and ready to be integrated when compared with those based on microscope objectives. In this paper, the three-dimensional (3D) trapping ability of an inclined dual-fiber optical tweezers is demonstrated. The trapping efficiency with respect to displacement i...

Rayleigh backscattering, optical fiber, optical time reflectometry, OTDR, white light interferometry, optical lowcoherence reflectometry Rayleigh backscattering at a wavelength of 1.55 um is measured in standard single-mode fiber with a spatial resol ution of 32 um and a dynamic range of over 30 dB. A minimum reflection sensitivity of -148 dB is the best reported to date using optical low-coher...

The field of optics has a drastic impact in the field of electronics and communication. With the rising need for higher data transfer rate, optical advancements have served this purpose. Optical amplifiers play a crucial role in the amplification of signal at regular intervals to avoid loss of data. Erbium doped fiber amplifiers (Erbium Doped Fiber Amplifier) carry out the amplification by stim...

Undersea fiber optic cables make the web worldwide. The main advantage of underwater optical fiber communication is the reliability of under cables. It is high due to extended repeater spacing. Submarine optical cable is the key component of the undersea optical system. Present paper discusses the various aspects of undersea optical telecommunications.

Over the last decade, optical fiber-based forms of microscopy and endoscopy have extended the realm of applicability for many imaging modalities. Optical fiber-based imaging modalities permit the use of remote illumination sources and enable flexible forms supporting the creation of portable and hand-held imaging instrumentations to interrogate within hollow tissue cavities. A common challenge ...

ONLINEAR fiber loop mirrors such as nonlinear optical N loop mirrors (NOLM) [1]-[3] and nonlinear amplifying loop mirrors (NALM) [3], [4] have been shown to have a great potential for fast optical switching for signal processing and all-optical communications [5], [6]. Recently, they have been used as a fast saturable absorber to passively mode lock fiber lasers. Generation and reshaping of pic...

We introduce and experimentally demonstrate a novel technique for one-dimensional coherent imaging through a single-mode optical fiber by use of a pulse shaper and a pulse imager. In contrast to the wavelength-division-multiplexed encoding technique, our approach preserves both amplitude and phase information of the optical signal transmitted through the fiber, allowing one to encode longitudin...

Plastic Optical Fiber Perfluorinated graded-index polymer optical fibers (GI-POFs) combine high data transmission rates and low attenuation in the commercially desirable 850–1300nm range. GI-POFs offer a direct replacement and a low cost alternative to traditional glass. With ease of use and affordability, GI-POFs make an excellent choice for the installation of high performance fiber networks....

Among the several architectures for IP (Internet Protocol) over WDM networks, one promising approach is to overlay a logical topology that consists of lightpaths on the physical WDM network, such that each lightpath carries IP traffic between edge nodes. Many of the conventional methods for designing the logical topology deal with the case of a constant number of wavelengths being available on ...