All-fiber acousto-optic tunable bandpass filter

Dimmick, T.E.; Satorius, D.A.; Burdge, Geoffrey L.

doi:10.1109/ofc.2001.928355

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…Under this configuration the device operates as a bandpass filter, and the light whose wavelength does not fulfill the phase-matching condition is strongly attenuated. All-fiber AO tunable bandpass filters (AOTBFs) based on this mechanism have been proposed and demonstrated in which the obstacle is composed of a core mode blocker (CMB) [5,[8][9][10][11]. CMBs have been fabricated by core damage [8,9], specially designed hollow optical fibers [10], and ultraviolet (UV)-induced effect [11].…”

mentioning

confidence: 99%

“…All-fiber AO tunable bandpass filters (AOTBFs) based on this mechanism have been proposed and demonstrated in which the obstacle is composed of a core mode blocker (CMB) [5,[8][9][10][11]. CMBs have been fabricated by core damage [8,9], specially designed hollow optical fibers [10], and ultraviolet (UV)-induced effect [11]. From these devices, a maximum suppression for the non-resonant modes of 35 dB can be achieved with a CMB made of local damage in the core [8], and a minimum insertion loss of 1 dB in a bandpass configuration based on UV-induced CMB [11].…”

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confidence: 99%

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Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

Ramírez-Meléndez

Bello-Jiménez

Pottiez

et al. 2017

IEEE Photon. Technol. Lett.

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Abstract-An all-fiber acousto-optic tunable bandpass filter based on a 1.185-mm long coreless core mode blocker is reported. Experimental results demonstrate a minimal insertion loss of 1.2 dB at the optical resonant wavelength of 1527.7 nm with 3-dB optical bandwidth of 0.83 nm. The optimization of the device takes into account the attenuation of the acoustic wave and leads to an asymmetric configuration in which the coupling section is shorter than the recoupling part. Under the effect of a standing flexural wave the device can be operated as a bandpass modulator. The device exhibits a maximum modulation depth of 28 %, 4 dB of insertion loss and 0.97 nm of optical bandwidth at 4.774 MHz.Index Terms-Acousto-optic filters, acousto-optic modulation, bandpass filters.

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confidence: 99%

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confidence: 99%

Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

Ramírez-Meléndez

Bello-Jiménez

Pottiez

et al. 2017

IEEE Photon. Technol. Lett.

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“…(λ r /2)m=d , (4) ∆λ r =(2d/m)-(2d/(m+1))≈ λ 2 /2d (5) where, λ r is the resonant wavelength, d is the length of HOF segment and m is the integer. These equations indicate that longer HOF segment gives narrower spacing between two adjacent maxima, and that the spacing increases along wavelength.…”

Section: In-line Fiber Etalon For High Temperature Sensingmentioning

confidence: 99%

“…Recently, their applications have been focused on all-fiber bandpass filters (BPFs) with low manufacturing cost and relatively simple design. The BPFs have been achieved by use of phase-shifted LPGs 2 and core mode blockers in the middle of two LPGs 3 or acousto-optic tunable filter (AOTF) 4 . Previous BPFs used core mode blockers based on local damage in the core region, which could induce scattering loss and lack reproducibility in manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Novel all-fiber optic temperature sensors based on hollow optical fibers

et al. 2004

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Novel all-fiber optic temperature sensors based on hollow optical fibers (HOFs) are presented. The HOFs with an air hole diameter of 8µm at the center are fabricated through elaborate controls of MCVD and fiber drawing process. Two types of all-fiber temperature sensors are described. One is an all-fiber temperature sensor composed of a short HOF serially concatenated between a pair of long-period fiber gratings using a B/Ge-codoped core single mode fiber (SMF). The broadband pass-band tuning range of 84.3nm, covering both S and C band, is observed in the range from 25 to 215 o C. Transmission peak is linearly shifted showing negative slope of -0.44nm/ o C at 1500nm region. Its design, fabrication arts, and device integration are explained with characteristics of output filter spectrum and temperature tuning. The other is an in-line fiber etalon temperature sensor using a short HOF segment fusion-spliced between standard SMFs. This device is characterized in terms of wavelength shift according to temperature for HOFs with and without Ge-doped ring core. Temperature sensitivity of 3.38×10 -5 / o C and dynamic range of 20dB are observed over the range from 25 to 330 o C at 1550nm. It is confirmed that the experimental results for both fiber optical sensors show a good agreement with theoretical analysis.

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“…For example, its intrinsic band rejection filtering property has been used for flattening the gain of the Erbium doped optical amplifier [3]. By taking advantage of continuous optical guiding structure and relatively cost-effectiveness of LPFGs, all-fiber band pass filters (BPFs) have been also developed [4][5][6][7][8]. …”

Section: Introductionmentioning

confidence: 99%