High butt-coupling efficiency to single-mode fibers using a 1.55-μm InGaAsP laser integrated with a tapered ridge mode transformer

Vusirikala, V.; Saini, Simarjeet S.; Bartolo, R.E.; Whaley, R.D.; Agarwala, S.; Dagenais, M.; Johnson, F.G.; Stone, D.R.

doi:10.1109/68.634712

Cited by 16 publications

(4 citation statements)

References 9 publications

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“…Inspired by the coupled mode theory, which has been applied in many coupled waveguide designs, such as the adiabatic mode transformer [20,21] and the silicon/III-V hybrid devices [22,23], we propose our structure as shown in Fig. 1 (a).…”

Section: Device Structure and Working Principlementioning

confidence: 99%

Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles

Lan

2020

IEEE Photonics J.

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In this work, we present a semiconductor FP laser design with significantly reduced divergence angles particularly in the vertical direction. The laser has a pair of vertically stacked, propagation constant unmatched twin waveguides that is coupled by a tapered ridge at the output end. As such, the laser has a significantly extended mode profile at the output section while the light propagation in the main section is not affected. Our simulation result shows that the divergence angles can be reduced to 13°×14° (horizontal × vertical), as opposed to typical values of 20°×29° in conventional ridge waveguide laser structures without a sport size convertor integrated. This design does not need any regrowth, with no appreciable penalty brought to other laser characteristics either.

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Section: Device Structure and Working Principlementioning

confidence: 99%

Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles

Lan

2020

IEEE Photonics J.

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“…Compared to previously reported double-core SSC, our structure does not rely on multilayer waveguides [15,16] so that growth is easier and conventional chemical wet etching can be performed straightforwardly by using the guiding layer as a stop etch layer. In addition, the design of the SSC is quite insensitive to taper tip size.…”

Section: Device Structure and Fabricationmentioning

confidence: 99%

1.55 µm spot-size converter with monolithically integrated laser diode by conventional process

Hou¹,

Wang²,

Zhu

2005

Semicond. Sci. Technol.

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A novel 1.55 µm laser diode (LD) with monolithically integrated spot-size converter (SSC) is designed and fabricated using conventional photolithography and the chemical wet etching process. For the laser diode, a ridge double-core structure is employed. For the spot-size converter, a buried double-waveguide structure is incorporated. The laterally tapered active core is designed and optically combined with the thin passive core to control the size of the mode. The threshold current was measured to be 40 mA together with high slope efficiency of 0.35 W A −1 . The beam divergence angles in the horizontal and vertical directions were as small as 14.9 • and 18.2 • , respectively.

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“…Butt coupling has been shown to be moderately efficient but suffers considerably from the fiber core-cladding eccentricity and can be utilized only in permanent junctions. 10 Peschel et al proposed a prism-coupling method. 11 However, this approach is suitable only for large fiber bending angle configurations and requires the stripping of the fiber protections and cladding.…”

Section: Department Of Physics and Pre-engineering Applied Opticsmentioning

confidence: 99%

Enhancement of the coupling efficiency in optical fibers using a two-beam optical interference

Amara

Melikechi

2002

Applied Physics Letters

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High butt-coupling efficiency to single-mode fibers using a 1.55-μm InGaAsP laser integrated with a tapered ridge mode transformer

Cited by 16 publications

References 9 publications

Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles

Vertically Coupled Partially Tapered Ridge Waveguide Semiconductor FP Laser With Improved Divergence Angles

1.55 µm spot-size converter with monolithically integrated laser diode by conventional process

Enhancement of the coupling efficiency in optical fibers using a two-beam optical interference

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