This work presents a systematic experimental investigation of tapered fiber Bragg gratings (tFBGs) fabricated from standard SMF-28 fiber with waist diameters ranging from 30 to 115 µm.
Here, we present a novel method to fabricate long period gratings using standard single mode optical fibers (SMF). These optical devices were fabricated in a three-step process, which consisted of
Here, we investigate a photonic crystal anti-reflection approach for the design of fully-etched TM grating couplers with high coupling efficiency and low back reflections between the
A new compact silicon grating coupler enabling fibre-to-chip light coupling at a minimized taper length is proposed. The proposed coupler, which
Consider an uniform grating in an optical fibre of radius ''r'', if the fibre is subjected to a tension ''F'', both the grating pitch ''A'' and the effective refractive index ''n'' change and this causes a change in the
A technique for fabricating fibre gratings with an accurately controlled chirp profile is demonstrated. The technique involves writing a grating over a section of fibre, the cladding of which has been tapered by
We have studied, both theoretically and experimentally, fiber Bragg gratings with a number of different chirp profiles. These chirp profiles can easily be achieved by a recently demonstrated technique
Abstract We have demonstrated a technique capable of controllably producing fiber Bragg gratings with any arbitrary chirp profiles. The technique involves making a taper on the outer cladding of a section
Typically, PICs require an effective coupling mechanism to launch light into the waveguide from a fiber. To this end, grating and edge couplers are widely employed [17–43]. Grating couplers are used in
It involves writing a grating over a section of fibre, the cladding of which has been tapered by etching in HF acid. A strain gradient along the taper is used to produce the chirp either during or after writing.
The technique involves making a taper on the outer cladding of a section of fiber by differential etching along the length of the fiber. A grating is then written over the taper in the usual
Chirped fibre Bragg gratings have been fabricated using a novel process in which the outer diameter of the fibre is tapered with a computer-controlled acid etching process.
Finally, required tapered fiber tips can be made by controlling the etching velocity and the pulling velocity of optical fiber from the etching solution.
Etched fibers have an uniform core and then a constant propagation coefficient that can be modified along the fiber by applying some mechanical stress, therefore etched fibers allow to
In tapered optical fiber sensing probe, the diameter of tapered optical fiber is usually several microns, and after incident light entering into tapered region, the angle of ray decreases gradually, and
Optical fibers have been the basis of the modern information technology since Kao and Hockham proposed glass waveguides as a practical medium for communication in 1965. A lot of different
Abstract We demonstrate a fork-shape edge coupler consisting of a two-tip taper and subwavelength gratings for optical interconnects in optical communication scenarios. The proposed
Abstract A new grating structure of cladding being etched as sinusoidal function along the grating length is introduced to improve their performance. When a tension is applied to it, the fiber
The optical mode from the compact silicon waveguide is first expanded laterally along an adiabatically tapered waveguide and then redirected
In this work, we present a gold-coated shallow-tapered chirped fiber Bragg grating (stCFBG) for dual refractive index (RI) and temperature sensing.
Focused ion beam milling is used on chemically etched tapered fiber tips to create fiber Bragg gratings. These fiber Bragg gratings are based on a
Abstract A method of spectral width tailoring of tapered fiber Bragg gratings is theoretically analyzed and experimentally verified. This concept is based on inscription grating structures in which
Grating couplers are attractive due to their off-plane coupling capability, which increases integration with other photonic devices, such as
The adiabatically tapered subwavelength-scale optical fiber tapers (OFTs) have been of interest for many photonic applications. We demonstrate chemical etching-based adiabatic OFTs
This paper demonstrates a method for preparing cylindrical tapers by the method of safe chemical etching of SMF28 optical fibers for the purpose of
We propose a seawater salinity sensor array based on a micro/nanofiber Bragg grating structures, which allows for the simultaneous measurement of temperature and salinity. The
A strain gradient develops over the taper when a tension is applied to the fibre and this strain gradient is used to introduce a chirp in the gratings. The chirp can be introduced either during
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