for a fiber optical surface plasmon resonance (spr) sensor a short part of its cladding should be removed to coat a thin layer of a metal. usually this is problematic when an optical fiber with small core diameter is used. in this paper, a new method using µliter droplet of the hf acid for short fiber optical taper fabrication is reported. using this method in a multi-mode optical fiber with th...

In this paper, a brief summary of different methods of fabrication of optical preform and fiber is reviewed. Several methods of incorporation of erbium ions into optical preforms are studied. Characterization of the fabricated erbium doped fibers including measurements of refractive index profile, absorption, fluorescence and gain spectra and metastable lifetime are described. It is also expres...

For a fiber optical surface plasmon resonance (SPR) sensor a short part of its cladding should be removed to coat a thin layer of a metal. Usually this is problematic when an optical fiber with small core diameter is used. In this paper, a new method using µliter droplet of the HF acid for short fiber optical taper fabrication is reported. Using this method in a multi-mode optical fiber w...

Recent progress in research on optical fiber devices, especially optical fiber couplers and optical fiber grating couplers, by a new fabrication method, that is, a CO2 laser irradiation method is reviewed. Furthermore, applications of optical fiber grating couplers are also described. Key-words: Optical Fiber Device, Optical Fiber Coupler, Optical Fiber Grating Coupler

Photonic devices are becoming widespread as an advanced information-communications network of the 21st century. With the increased use of photonic devices, there is a need for optical connecting path between photonic devices. The optical fiber array is such a smart approach for all optical functionality of the optical chip without any need of electrical wiring. However, it remains a challenge t...

Recently introduced surface nanoscale axial photonics (SNAP) makes it possible to fabricate high-Q-factor microresonators and other photonic microdevices by dramatically small deformation of the optical fiber surface. To become a practical and robust technology, the SNAP platform requires methods enabling reproducible modification of the optical fiber radius at nanoscale. In this Letter, we dem...

A new method for sample fiber Bragg grating fabrication by use of both femtosecond laser and CO(2) laser has been proposed and demonstrated. Such a method exhibits the advantages of high fabrication flexibility, and good thermal stability. The sampling period and duty cycle can be easily varied by changing the CO(2) laser beam scanning pattern during operation. The gratings produced have potent...

Fused fiber components are the key building blocks that enable reliable and efficient operation of high power fiber lasers. In this paper, we review fabrication techniques for the manufacture of such devices, including mode-field adaptors, fiber tapers, fused couplers, and fused combiners. We present the basic equations governing both the optical performance and fabrication requirements for the...

In this paper, we propose a saturable absorber (SA) device consisting on an in-fiber micro-slot inscribed by femtosecond laser micro fabrication, filled by a dispersion of Carbon Nanotubes (CNT). Due to the flexibility of the fabrication method, efficient and simple integration of the mode-locking device directly into the optical fiber is achieved. Furthermore, the fabrication process offers a ...

In this paper we present the fabrication of optical mode field adaptors for fiber optical communications using fiber splicing machine in special newly developed modus. We developed mode field transformers with radii from 5 m to 80 m the end of standard singlemode and multimode glass fibers, characterized by far field and near field methods. Easy and reliable fabrication of the radii with low st...