Polarization dependent loss in a Ti:LiNbO3 polarization scrambler/controller

Takumi Fujiwara; Akio Watanabe; Hiroshi Mori

doi:10.1109/68.491220

Polarization dependent loss in a Ti:LiNbO₃ polarization scrambler/controller

Takumi Fujiwara, Akio Watanabe, Hiroshi Mori

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

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Abstract

We have investigated the polarization dependent loss (PDL) of a waveguide-type polarization scrambler/controller consisting of a half-wave plate (HWP) and a quarter-wave plate (QWP) in series fabricated in x-cut/z-propagating Ti-diffused LiNbO₃ optical waveguides. Based on the polarization dependences of both the propagation loss coefficient and mode-mismatch loss with fiber at 1.55 μm combined with a numerical analysis, the PDL of the fabricated device is estimated to be 0.063 dB. It is shown that the low PDL is a direct consequence of a special anisotropy relation between the propagation loss and waveguide-fiber mode-mismatch loss.

Original language	English
Pages (from-to)	542-544
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	8
Issue number	4
DOIs	https://doi.org/10.1109/68.491220
Publication status	Published - 1996 Apr
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/68.491220

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title = "Polarization dependent loss in a Ti:LiNbO3 polarization scrambler/controller",

abstract = "We have investigated the polarization dependent loss (PDL) of a waveguide-type polarization scrambler/controller consisting of a half-wave plate (HWP) and a quarter-wave plate (QWP) in series fabricated in x-cut/z-propagating Ti-diffused LiNbO3 optical waveguides. Based on the polarization dependences of both the propagation loss coefficient and mode-mismatch loss with fiber at 1.55 μm combined with a numerical analysis, the PDL of the fabricated device is estimated to be 0.063 dB. It is shown that the low PDL is a direct consequence of a special anisotropy relation between the propagation loss and waveguide-fiber mode-mismatch loss.",

author = "Takumi Fujiwara and Akio Watanabe and Hiroshi Mori",

year = "1996",

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AU - Fujiwara, Takumi

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AU - Mori, Hiroshi

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N2 - We have investigated the polarization dependent loss (PDL) of a waveguide-type polarization scrambler/controller consisting of a half-wave plate (HWP) and a quarter-wave plate (QWP) in series fabricated in x-cut/z-propagating Ti-diffused LiNbO3 optical waveguides. Based on the polarization dependences of both the propagation loss coefficient and mode-mismatch loss with fiber at 1.55 μm combined with a numerical analysis, the PDL of the fabricated device is estimated to be 0.063 dB. It is shown that the low PDL is a direct consequence of a special anisotropy relation between the propagation loss and waveguide-fiber mode-mismatch loss.

AB - We have investigated the polarization dependent loss (PDL) of a waveguide-type polarization scrambler/controller consisting of a half-wave plate (HWP) and a quarter-wave plate (QWP) in series fabricated in x-cut/z-propagating Ti-diffused LiNbO3 optical waveguides. Based on the polarization dependences of both the propagation loss coefficient and mode-mismatch loss with fiber at 1.55 μm combined with a numerical analysis, the PDL of the fabricated device is estimated to be 0.063 dB. It is shown that the low PDL is a direct consequence of a special anisotropy relation between the propagation loss and waveguide-fiber mode-mismatch loss.

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Polarization dependent loss in a Ti:LiNbO₃ polarization scrambler/controller

Abstract

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