Comparative study of long-period gratings written in a boron co-doped fiber by an electric arc and UV irradiation

Śmietana, Mateusz; Bock, Wojtek J.; Mikulic, Predrag

doi:10.1088/0957-0233/21/2/025309

Cited by 39 publications

(51 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that when LPG is induced asymmetrically in the fiber, additional resonances appear in its transmission spectrum. They are a result of coupling to asymmetrical cladding modes [12][13][14]. Similar effect takes place when the overlay is deposited asymmetrically.…”

mentioning

confidence: 75%

Improved diamond‐like carbon coating deposition uniformity on cylindrical sample by its suspension in RF PECVD chamber

Śmietana

Koba

Mikulic

et al. 2015

Physica Status Solidi (a)

View full text Add to dashboard Cite

.pl, Phone: þ48 22 234 6364, Fax: þ48 22 234 6063The paper discusses the uniformity of diamond-like carbon (DLC) thin overlays deposited with radio frequency plasmaenhanced chemical vapor deposition (RF PECVD) method on optical fibers with induced long-period gratings (LPGs). When refractive index around the LPG increases, a spectral response of the LPG strongly depends on properties of the overlay. Using LPG suspended in the RF PECVD chamber, we have found that DLC thickness distribution around the fiber highly depend on a distance between the LPG and the electrode. More asymmetrical deposition, which takes place when the LPG is located closer to the electrode, induces appearance of a series of additional resonances in LPG transmission spectrum. It has been found that for the fiber suspended 7.2 mm over the electrode the coating has the highest uniformity. Higher uniformity obtained by fiber suspension in the chamber has been compared with the effect resulting from fiber rotation between two consecutive processes. It is shown that more symmetrical deposition is obtained for the suspended samples than for the rotated ones.

show abstract

mentioning

confidence: 75%

Improved diamond‐like carbon coating deposition uniformity on cylindrical sample by its suspension in RF PECVD chamber

Śmietana

Koba

Mikulic

et al. 2015

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

“…The grating studied here was fabricated within the Be/Ge co-doped fiber. Such an LPFG exhibits the spectral shifts towards the lower λ res with an increasing temperature [17]. Which of these two effects dominates will depend primarily on the magnitude of the inherent thermally sensitive LPFG host and on the relationship between the n cl and the n o .…”

Section: To 49mentioning

confidence: 99%

Spectral Tuning of the Long-Period Fiber Gratings by Using Low Birefringence Liquid Crystals

et al. 2011

View full text Add to dashboard Cite

The work presented in this paper is focused on investigation of the spectral properties of the long-period fiber gratings combined with the liquid crystals, named liquid crystal long-period fiber gratings. The experiments carried out showed that the proposed designs of the liquid crystal long-period fiber gratings can offer very interesting spectral properties and can introduce a new level of sensitivity. In particular, a high-efficiency thermal tuning of the long-period fiber gratings coated with low-birefringence liquid crystal layers could be achieved and gave rise to a fast and wide switching ability of the attenuation bands within their transmission spectrum.

show abstract

“…As far as the SM28 fiber is concerned, the LPFG were manufactured using a cost-effective electric arc method following a procedure similar to that presented in [10]. The LPFG SMs had a period of 770 µm and a length of 4.5 cm.…”

Section: Experimental Setups and Materialsmentioning

confidence: 99%

Towards tuning of thermal sensitivity of the long period fiber gratings using a liquid crystal layer

Czapla

Bock²,

Mikulic³

et al. 2010

Bulletin of the Polish Academy of Sciences: Technical Sciences

View full text Add to dashboard Cite

Abstract.A high-efficiency thermal tuning filter based on a long-period fiber grating (LPFG) combined with a low-birefringence liquid crystal (LB LC) cladding layer is presented. Two types of LPFGs were studied and compared: the LPFGs based on a standard telecommunication fiber produced by an electric arc technique, and the LPFGs based on a boron co-doped fiber written by a UV technique. Both types of LPFGs when enhanced with an external LB LC layer exhibit two different temperature sensitivities, which depend on the temperature range of operation. For the LPFGs based on standard telecommunication fiber we can conclude that the presence of the LB LC cladding increases the thermal tuning efficiency by more than one order of magnitude over the value for the LPFGs in air. In the case of the LPFGs based on the boron co-doped fiber we discovered it is possible to obtain either a temperature-independent attenuation band or the attenuation bands with high temperature sensitivities, just by careful choice of the order of the cladding mode and the operating wavelength.

show abstract

Comparative study of long-period gratings written in a boron co-doped fiber by an electric arc and UV irradiation

Cited by 39 publications

References 31 publications

Improved diamond‐like carbon coating deposition uniformity on cylindrical sample by its suspension in RF PECVD chamber

Improved diamond‐like carbon coating deposition uniformity on cylindrical sample by its suspension in RF PECVD chamber

Spectral Tuning of the Long-Period Fiber Gratings by Using Low Birefringence Liquid Crystals

Towards tuning of thermal sensitivity of the long period fiber gratings using a liquid crystal layer

Contact Info

Product

Resources

About