Tunable thin film filters based on thermo-optic semiconductor films

Domash, Lawrence H.; Eugene, Y.; Nemchuk, N.; Payne, Adam; Wu, Ming Shing

doi:10.1117/12.474383

Cited by 8 publications

(5 citation statements)

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“…A tunable filter is attached to each of the N output ports of the coupler and each filter selects a wavelength independently. The filters used in this scheme can be thin-film tunable filters [8][9], grating filters [10][11], or filters of any other technologies.…”

Section: Available Tunable Demux/mux Technologiesmentioning

confidence: 99%

A Novel Tunable DeMUX/MUX Solution for WSS-Based ROADM and WXC Nodes

Zong¹,

Huang

Wang³

et al. 2007

OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference

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Section: Available Tunable Demux/mux Technologiesmentioning

confidence: 99%

A Novel Tunable DeMUX/MUX Solution for WSS-Based ROADM and WXC Nodes

Zong¹,

Huang

Wang³

et al. 2007

OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference

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“…Domash and al. proposed to use multiple-cavity-thin-film filters with cavities made of hydrogenated amorphous silicon a:Si-H and thus achieved center wavelength sensitivities around 100pm/°C [9,10]. However, it means that 400°C temperature variations are required to achieve a tunability across the whole C-Band (1530 -1570 nm).…”

Section: Introductionmentioning

confidence: 99%

Tunable double-cavity solid-spaced bandpass filter

Floriot¹,

Lemarchand²,

Lequime³

2004

Opt. Express

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In this paper, we introduce the principle and demonstrate the feasibility of a tunable multiple-cavity solid-spaced bandpass filter for WDM (Wavelength Division Multiplexing) applications, which uses a vernier effect since the two cavities have different thermal sensitivities. A set of specific wavelengths can be addressed in the whole C-Band by using temperature changes less than 100 degrees C. This result corresponds to a gain factor in sensitivity about 5 with respect to alternative standard thin-film configurations.

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“…Until now, many researchers developed electrically tunable Fabry-Pe ´rot filters using piezoelectric actuators, 2) liquid crystals, 3) electrostatically deformed semiconductor plates, 4,5) or heated semiconductor films. 6) In this work, we conducted experiments of all-optical spectral tuning using a Fabry-Pe ´rot filter made of an ultrathin silicon (Si) plate. Laser irradiation of a semiconductor plate causes both a free-carrier excitation and a rise in temperature, which in turn cause a refractive-index change in the plate.…”

mentioning

confidence: 99%

Infrared Wavelength Tuning by Laser Irradiation of an Ultrathin Silicon Plate

Saito¹,

Matsumoto²,

Sawai³

2005

Jpn. J. Appl. Phys.

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By applying a small amplitude modulation to the mean current in a mercury positive column and observing the microwave reflection from the column in the region of resonance, the mercury ionization rate may be determined. The results show better agreement with theory than do probe measurements, probably because, unlike probes, the microwaves do not disturb the ion current flow to the walls. Electron temperatures may be calculated from the ionization rate using the 'free-fall' theory proposed by Langmuir and To& in 1929.

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Tunable thin film filters based on thermo-optic semiconductor films

Cited by 8 publications

References 0 publications

A Novel Tunable DeMUX/MUX Solution for WSS-Based ROADM and WXC Nodes

A Novel Tunable DeMUX/MUX Solution for WSS-Based ROADM and WXC Nodes

Tunable double-cavity solid-spaced bandpass filter

Infrared Wavelength Tuning by Laser Irradiation of an Ultrathin Silicon Plate

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