Fiber-Optical Power Limiter and Cut-Off Switch Based on Thermo-Optical Effect

Martinček, Ivan; Pudiš, Dušan

doi:10.1109/lpt.2011.2177655

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…There are several articles describing optical power limiting in bulk systems. [12][13][14] Unfortunately, there is not many reports on the development of on-chip OPLs. Ref.…”

Section: Introductionmentioning

confidence: 99%

On‐Chip Optical Power Limiter for Quantum Communications

Alagappan,

Lim

2024

Adv Quantum Tech

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This article presents an on‐chip optical power limiter that utilizes the thermo‐optical defocusing effect. A pair of input and output waveguides is designed to mimic emitting and receiving antennas. The waveguides are separated by a free‐space region filled with poly‐methyl‐meth‐acrylate (PMMA) material, which has a negative thermal‐optic coefficient that causes a decrease in refractive index with an increase in temperature. As the power in the input waveguide increases, the refractive index of the free‐space region decreases, which in turn increases the radiated beam's divergence angle with respect to input power. The empirical findings demonstrate that the non‐linear divergence angle can be written as , where θ0 represents the divergence angle of the equivalent Gaussian beam, k is a waveguide‐specific constant, and P is the input power. The edge of the receiving waveguide is tapered to adjust the coupling of the divergent beam to the output waveguide. The taper width is optimized to minimize insertion loss. The devices are two orders lengthwise smaller compared to the bulk demonstration, and they exhibit low loss ranging from 0.2 to 10 dB.

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“…There are several articles describing optical power limiting in bulk systems. [12][13][14] Unfortunately, there is not many reports on the development of on-chip OPLs. Ref.…”

Section: Introductionmentioning

confidence: 99%

On‐Chip Optical Power Limiter for Quantum Communications

Alagappan,

Lim

2024

Adv Quantum Tech

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“…The novel NOL media feature light weight, small size, and being easy to bend, which may easily achieve excellent NOL performance within a small volume. This NOL technology may have potential applications in all-optical communications [18] , sensor protection [19] , and other infrared broadband laser protection fields. interaction of optical and acoustic waves in the optical fiber [20] .…”

Section: Introductionmentioning

confidence: 99%

Infrared broadband nonlinear optical limiting technology based on stimulated Brillouin scattering in As2Se3 fiber

Huang

et al. 2022

中国光学快报

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A novel infrared broadband nonlinear optical limiting (NOL) technology based on stimulated Brillouin scattering (SBS) in As 2 Se 3 fiber is proposed. The As 2 Se 3 fiber allows a weak infrared laser to pass through, but blocks an intense laser with the same wavelength due to the SBS effect. This NOL technology has been experimentally proved to have excellent NOL performance for incident pulsed lasers with a typical infrared wavelength of 3.6 μm. The linear transmissions of 1 m and 0.5 m As 2 Se 3 fibers are higher than 90%, and the lowest nonlinear transmissions are reduced to 0.89% and 1.23%, respectively.

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