Broadband Dispersion Compensating Octagonal Photonic Crystal Fiber for Optical Communication Applications

Abstract

We numerically report the design of a modified octagonal photonic crystal fiber (M-OPCF) for broadband dispersion compensation covering the C and L communication bands, i.e., wavelengths ranging from 1530 to 1625 nm. It was shown that the proposed broadband compensating PCF can be designed to simultaneously exhibit a high negative dispersion coefficient and a relative dispersion slope (RDS) close to that of a conventional single-mode optical fiber (SMF). From our results, it was found that the M-OPCF has a large negative dispersion [À226 to À290 ps/(nmÁkm)] over the C-and L-bands, and an RDS close to that of an SMF of about 0.0034 nm À1 . In addition to this, the effective dispersion, residual dispersion, confinement loss, and polarization properties of the proposed PCF are also reported and discussed. #

Polarization maintaining holey fibers for residual dispersion compensation over S + C + L wavelength bands

“…From the above results, it is clear for all cases that a large negative dispersion is obtained and the dispersion value of the proposed HF at 1550 nm wavelength is about −672 ps/nm/km which is higher than in Ref. [12] and far exceeding the dispersion values of conventional DCFs which is typically −100 ps/nm/km [19]. ±0.06 m 2 for ±2% change in parameters.…”

“…However, conventional solid optical fibers such as conventional DCFs, have some limitations related to their structure, for instance, materials of different thermal expansion coefficients (i.e., germanium-doped core and silica cladding regions). Recently, an octagonal holey fiber (OHF) with the first ring of elliptical holes have proposed which exhibits negative dispersion coefficient of only −239.5 ps/nm/km with birefringence of about 1.67 × 10 −2 [12] that requires a long fiber to compensate for the accumulated dispersion of the transmission fiber. Moreover, the fabrication of elliptical air-hole HFs is a challenging issue.…”

Design of Hexagonal Photonic Crystal Fiber With Ultra-High Birefringent and Large Negative Dispersion Coefficient for the Application of Broadband Fiber

“…Recently for the application of sensing and high bit rate communication system lots of research paper are published [1][2][3][4][5][6][7][8][9][10][11]. Birefringence is one of the most interesting characteristics among the features of PCFs.…”

Design of polarization-maintaining photonic crystal fibre for dispersion compensation over the E+S+C+L telecom bands

“…The octagonal PCF suggested in Ref. [10] ensures moderate negative dispersion (-239.5 ps/(nm km)) and birefringence (1.67×10 -2 ). Another octagonal structure (see Ref.…”

“…We use five air-hole rings for a better field confinement and reducing the confinement losses (see Ref. [10]). The core consists of circularly shaped rings and so does the second ring.…”