Narrow-band vertically stacked filters in InGaAlAs/InP at 1.5 μm

Sang Kook Han; Ramu V. Ramaswamy; Robert F. Tavlykaev

doi:10.1109/50.476140

Narrow-band vertically stacked filters in InGaAlAs/InP at 1.5 μm

Sang Kook Han, Ramu V. Ramaswamy, Robert F. Tavlykaev

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A narrow-band wavelength filter in InGaAlAs/InP has been modeled, fabricated, and tested. A highly asymmetrical, vertically coupled directional coupler operating near the band-edge is formed by a narrow ridge and a wide strip-loaded waveguide. The results of numerical simulation, performed by employing the spectral index method, effective-index method, and a modified coupled-mode theory, are used to fabricate a filter structure with a prescribed filter response. Operation at a center wavelength around 1.5 μm with a bandwidth of 18 Å and transfer efficiency of ∼46-68% is achieved. Excellent agreement between the designed and measured bandwidth is demonstrated. A multichannel filter device based on an array of individual filters that is capable of extending the usable spectral range is analyzed.

Original language	English
Pages (from-to)	77-82
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	14
Issue number	1
DOIs	https://doi.org/10.1109/50.476140
Publication status	Published - 1996 Jan

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1109/50.476140

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title = "Narrow-band vertically stacked filters in InGaAlAs/InP at 1.5 μm",

abstract = "A narrow-band wavelength filter in InGaAlAs/InP has been modeled, fabricated, and tested. A highly asymmetrical, vertically coupled directional coupler operating near the band-edge is formed by a narrow ridge and a wide strip-loaded waveguide. The results of numerical simulation, performed by employing the spectral index method, effective-index method, and a modified coupled-mode theory, are used to fabricate a filter structure with a prescribed filter response. Operation at a center wavelength around 1.5 μm with a bandwidth of 18 {\AA} and transfer efficiency of ∼46-68% is achieved. Excellent agreement between the designed and measured bandwidth is demonstrated. A multichannel filter device based on an array of individual filters that is capable of extending the usable spectral range is analyzed.",

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year = "1996",

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T1 - Narrow-band vertically stacked filters in InGaAlAs/InP at 1.5 μm

AU - Han, Sang Kook

AU - Ramaswamy, Ramu V.

AU - Tavlykaev, Robert F.

PY - 1996/1

Y1 - 1996/1

N2 - A narrow-band wavelength filter in InGaAlAs/InP has been modeled, fabricated, and tested. A highly asymmetrical, vertically coupled directional coupler operating near the band-edge is formed by a narrow ridge and a wide strip-loaded waveguide. The results of numerical simulation, performed by employing the spectral index method, effective-index method, and a modified coupled-mode theory, are used to fabricate a filter structure with a prescribed filter response. Operation at a center wavelength around 1.5 μm with a bandwidth of 18 Å and transfer efficiency of ∼46-68% is achieved. Excellent agreement between the designed and measured bandwidth is demonstrated. A multichannel filter device based on an array of individual filters that is capable of extending the usable spectral range is analyzed.

AB - A narrow-band wavelength filter in InGaAlAs/InP has been modeled, fabricated, and tested. A highly asymmetrical, vertically coupled directional coupler operating near the band-edge is formed by a narrow ridge and a wide strip-loaded waveguide. The results of numerical simulation, performed by employing the spectral index method, effective-index method, and a modified coupled-mode theory, are used to fabricate a filter structure with a prescribed filter response. Operation at a center wavelength around 1.5 μm with a bandwidth of 18 Å and transfer efficiency of ∼46-68% is achieved. Excellent agreement between the designed and measured bandwidth is demonstrated. A multichannel filter device based on an array of individual filters that is capable of extending the usable spectral range is analyzed.

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Narrow-band vertically stacked filters in InGaAlAs/InP at 1.5 μm

Abstract

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