Direct writing of planar waveguide power splitters and directional couplers using a focused ultraviolet laser beam

Svalgaard, Mikael

doi:10.1049/el:19971138

Cited by 44 publications

(18 citation statements)

References 5 publications

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“…In addition, it results in smoothly varying shapes that can be easily realized by modern, flexible UV-writing techniques [27]. For a certain crosstalk level, complex optimized shapes, on the other hand, can potentially result in overall shorter devices.…”

Section: Taper Shape Optimizationmentioning

confidence: 99%

Design considerations in optical add/drop multiplexers based on grating-assisted null couplers

Riziotis

Zervas

2001

J. Lightwave Technol.

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Abstract-The performance of a fully optimized optical add/drop multiplexer (OADM), based on null couplers and tilted Bragg gratings, is studied in detail. It is shown that maximization of the device performance involves three main optimization steps. First, the waveguide asymmetry ( 2 1 ratio) should be optimized in order to minimize the extinction ratio of the unwanted mode at the null coupler waist. Second, the coupler taper shape should be optimized in order to further minimize the aforementioned extinction ratio. Third, the grating tilt angle and relative width can be also optimized to give negligible backreflections at the input port and minimize radiation losses. The results show that the proposed high-performance OADM configuration can meet the stringent telecom specifications.

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Section: Taper Shape Optimizationmentioning

confidence: 99%

Design considerations in optical add/drop multiplexers based on grating-assisted null couplers

Riziotis

Zervas

2001

J. Lightwave Technol.

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“…Basic integrated optical devices such as straight waveguides, s-bends, directional couplers, and 1:2 power splitters have been demonstrated with UV writing [2]- [4]. More complex devices, such as wavelength selective optical add-drop multiplexers [5], and waveguide lasers [6] have also been demonstrated with UV writing.…”

mentioning

confidence: 99%

Variable optical attenuator fabricated by direct uv writing

Svalgaard

Færch

Andersen³

2003

J. Lightwave Technol.

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“…The use of multiple concatenated scans, as opposed to the dual scanning technique employed in early work [14], enables scalability of a pre-optimized branching section into larger trees. On the other hand it sets stringent requirements on the scanning accuracy, hence the need for interferometric position feedback during the scanning process.…”

Section: Splitter Designmentioning

confidence: 99%