A tunable single-polarization photonic crystal fiber filter based on surface plasmon resonance

Zhang, Shuhuan; Li, Jianshe; Li, Shuguang; Liu, Qiang; Liu, Yingchao; Zhang, Zhen; Wang, Yujun

doi:10.1007/s00340-018-6988-8

Cited by 17 publications

(5 citation statements)

References 21 publications

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“…In this filter, the CT is employed to evaluate the filtering performance and can directly reflect the transmission signal quality and system performance in the operating band [36], typically expressed as: ( )…”

Section: Structure and Theorymentioning

confidence: 99%

Numerical analysis of an all-fiber plasmonic polarization filter using dual elliptical gold thin layers deposited photonic crystal fiber

Xu,

Liu,

Chen

et al. 2024

Phys. Scr.

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In order to solve the problems of high performance and small size incompatibility, as well as limited bandwidth, of traditional polarization filters in optical communication systems, this work presents an all-fiber polarization filter using dual elliptical gold layer deposited photonic crystal fiber by the finite element tool. The gold layers are plated on the inside of the two elliptical holes to create surface plasmon resonance effect, which cause the signal intensity in x-polarized direction to be much greater than that in y-polarized direction. The simulation results illustrate that when hole-to-hole pitch Ʌ is 2.0 μm, cladding hole diameter d1 is 2.0 μm, two inner-holes’ diameter d2 is 0.3 μm, spacing between two inner-holes ds is 0.755 μm, the major axis length of elliptical holes a is 2.0 μm, the minor axis length of elliptical holes b is 0.97 μm, the gold thin layer t is 100 nm, the proposed PCF filter exhibits good filtering performance at the communication wavelength of 1.55 μm, where the confinement loss in x- and y-polarized direction are 303.91 dB/cm and 0.06 dB/cm, respectively. The crosstalk and operating bandwidth improve with the increment of device’s length, the 800 μm-long PCF filter possesses the maximum crosstalk of -211.14 dB and the bandwidth of 600 nm. Finally, the experimental scheme is also discussed. We believe that this photonic filter can play a significant role in optical communication, optical sensing, spectral analysis, and other related fields.

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Section: Structure and Theorymentioning

confidence: 99%

Numerical analysis of an all-fiber plasmonic polarization filter using dual elliptical gold thin layers deposited photonic crystal fiber

Xu,

Liu,

Chen

et al. 2024

Phys. Scr.

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“…[160] Selectively filling metal into some air holes brings inherently enhanced polarization-dependent transmission, which could eventually be used for the development of an in-fiber absorbing polarizer or notch filters. [161][162][163][164] The flexible structural designability, ability to fill air holes, and diversity of the working principles of PCFs result in disparate novel properties and wide application prospects in lasers, sensors, supercontinuum light sources, optical fiber communication systems, etc. beyond traditional fibers.…”

Section: The Progress In Optical Fibersmentioning

confidence: 99%

The Rise of Graphene Photonic Crystal Fibers

Zhou

Deng

et al. 2022

Adv Funct Materials

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2D graphene with tremendous novel properties is an ideal material for optical and optoelectronic applications. Meanwhile, photonic crystal fibers (PCFs) have been recognized as next-generation optical fibers that possess a designable porous structure, rich functions, and different working mechanisms. Recently, the integration of graphene with a PCF has formed a new hybrid fiber, a graphene photonic crystal fiber (Gr-PCF), which exhibits an extremely strong and tunable light-matter interaction across a broadband spectrum range and opens up a new interdisciplinary research direction. In this review, recent studies on, and achievements in graphene-traditional fibers and Gr-PCFs have been summarized from the aspects of the development process, preparation method, and device application. First, the graphene properties and the development and characteristics of PCFs are introduced. The discussion is continued with the existing fabrication technologies for hybrid graphene-traditional fibers. Next, the chemical vapor deposition method for Gr-PCFs is elaborated. Then, fiber devices based on graphene-traditional fibers, Gr-PCFs, and other 2D material fibers are presented. To conclude, challenges and perspectives are presented to encourage advanced Gr-PCF study.

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“…Furthermore, the yellow elliptical rings are the gold films coated on the surface of the air holes to excite SPR. Compared to gold wire, the gold film not only saves production cost but also has a more distinct effect on the characteristics of PCF [13]. The thickness of the gold layer is t=40 nm.…”

Section: Structure Design and Theorymentioning

confidence: 99%

“…Nevertheless, the filtering characteristics are difficult to adjust. For the sake of realizing tunable filtering, Zhang et al [13] designed a tunable single polarization filter at the wavelength of 1550 nm by selectively coating a gold film with different thickness on the air hole of PCF. But it only operates in a single communication band which could not covers the band of both 1310 nm or 1550 nm simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Elliptical-hole PCF structure with selective Y-axis gold coating for tunable single-polarization band-stop filtering

Xia

Chen

et al. 2019

Eng. Res. Express

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An elliptical-hole photonic crystal fiber (PCF) based on surface plasmon resonance (SPR) is proposed, which can work as a tunable single-polarization band-stop filter (BSF). Theoretical results show that the proposed structure is very sensitive to the polarization of the guided modes, due to its high birefringence coefficient and strong SPR effect. It can achieve single-polarization single-mode (SPSM) filtering without liquid filled in the gold coated air holes. At resonant wavelength, the loss of the y polarization fundamental mode reaches 792.16 dB cm −1 , but the loss of the x polarization fundamental mode is only 0.52 dB cm −1 , causing that the extinction ratio is as high as 688 dB and the bandwidth is larger than 520 nm with the PCF length of 1 mm. When liquids with the refractive index (RI) ranging from 1.44 to 1.48 are filled in the gold coated air holes, the PCF could be used as a BSF to filter the x polarization fundamental mode selectively on the premise of SPSM filtering. And the center wavelength of the BSF is extremely sensitive to the liquid RI with a high sensitivity of 16 820 nm/RIU, which indicates a potential application in RI sensing. The proposed PCF realizing the integration of SPSM filter and BSF is available for compact optical communication systems.

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A tunable single-polarization photonic crystal fiber filter based on surface plasmon resonance

Cited by 17 publications

References 21 publications

Numerical analysis of an all-fiber plasmonic polarization filter using dual elliptical gold thin layers deposited photonic crystal fiber

Numerical analysis of an all-fiber plasmonic polarization filter using dual elliptical gold thin layers deposited photonic crystal fiber

The Rise of Graphene Photonic Crystal Fibers

Elliptical-hole PCF structure with selective Y-axis gold coating for tunable single-polarization band-stop filtering

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