Efficient coupling of a semiconductor laser to an optical fiber by means of a tapered waveguide on silicon

Shani, Y.; Henry, C. H.; Kistler, R. C.; Orlowsky, K. J.; Ackerman, D.A.

doi:10.1063/1.102290

Cited by 97 publications

(29 citation statements)

References 5 publications

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“…By employing inverted waveguide tapers 23 to limit the divergence the 8 output beams, in addition to a proper choice of a lens and a detector array in the output optics, 24 we eliminate the need for polishing the output edge. This is of great importance for mass production, since costly manual handling of individual chips is avoided.…”

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A packaged optical slot-waveguide ring resonator sensor array for multiplex label-free assays in labs-on-chips

et al. 2010

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We present the design, fabrication, and characterisation of an array of optical slot-waveguide ring resonator sensors, integrated with microfluidic sample handling in a compact cartridge, for multiplexed real-time label-free biosensing. Multiplexing not only enables high throughput, but also provides reference channels for drift compensation and control experiments. Our use of alignment tolerant surface gratings to couple light into the optical chip enables quick replacement of cartridges in the read-out instrument. Furthermore, our novel use of a dual surface-energy adhesive film to bond a hard plastic shell directly to the PDMS microfluidic network allows for fast and leak-tight assembly of compact cartridges with tightly spaced fluidic interconnects. The high sensitivity of the slot-waveguide resonators, combined with on-chip referencing and physical modelling, yields a volume refractive index detection limit of 5 x 10(-6) refractive index units (RIUs) and a surface mass density detection limit of 0.9 pg mm(-2), to our knowledge the best reported values for integrated planar ring resonators.

QC 20100715

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A packaged optical slot-waveguide ring resonator sensor array for multiplex label-free assays in labs-on-chips

et al. 2010

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QC 20100715

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“…1 Similarly in optoelectronics, if we slowly modify an optical waveguide with distance, the optical mode can be adiabatically changed into another pure mode with different spatial characteristics. By use of this property, many devices such as waveguide fiber couplers 2 and add-drop filters 3 have been constructed. The waveguides that are involved in those applications are all based on guiding as a result of total internal ref lection.…”

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Adiabatic coupling between conventional dielectric waveguides and waveguides with discrete translational symmetry

Lee

Yariv

2000

Opt. Lett.

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We study adiabatic transformation in optical waveguides with discrete translational symmetry. We calculate the ref lection and transmission coeff icient for a structure consisting of a slab waveguide that is adiabatically transformed into a photonic crystal waveguide and then back into a slab waveguide. The calculation yields high transmission over a wide frequency range of the photonic crystal waveguide band and indicates efficient coupling between the slab waveguide and the photonic crystal waveguide. Other applications of adiabatic mode transformation in photonic crystal waveguides and the coupled-resonator optical waveguides are also discussed.  2000 Optical Society of America OCIS codes: 230.3120, 230.7370, 130.3120. In quantum mechanics it is well known that, if the Hamiltonian of a system changes slowly, the eigenmode at any one moment is adiabatically transformed into a pure and different eigenmode at any later time. 1Similarly in optoelectronics, if we slowly modify an optical waveguide with distance, the optical mode can be adiabatically changed into another pure mode with different spatial characteristics. By use of this property, many devices such as waveguide fiber couplers 2 and add-drop filters 3 have been constructed. The waveguides that are involved in those applications are all based on guiding as a result of total internal ref lection. The unperturbed waveguides have continuous spatial translation symmetry along the mode propagation direction. As a consequence, one can easily achieve the condition of adiabaticity by slowly and continuously varying the waveguide parameters as the optical modes propagate. 4 However, there are other types of waveguide (for example, the waveguides constructed from photonic crystals 5,6 ) that possess only discrete translational symmetry, for which the optical conf inement is achieved by multiple Bragg ref lections. In these types of geometry, the refractive index of the dielectric medium and the optical modes usually change signif icantly within a single unit cell. Therefore, for these structures it is not clear that we can achieve adiabatic mode transformation or, if we can, how slow the transformation should be to satisfy the adiabaticity condition. This problem is of signif icant practical interest and, until now, has been untreated.As an example of adiabatic mode transformation in waveguides with discrete translational symmetry, we study a geometry shown in Fig. 1(a), where a slab waveguide is tapered and changed into a square-lattice photonic crystal waveguide and then back into a slab waveguide. Because of numerical discretization constraints, we choose the slab waveguide taper to be a simple angled cut, as illustrated in Fig. 1(a). For an arbitrary taper angle u, the slab waveguide mode and the photonic crystal waveguide mode do not couple well to each other, because they have different spatial characteristics and dispersion relations. This mode mismatch will in general cause significant backref lection. However, for a small taper angle it is possible ...

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“…When the bias current was modulated, the optical beam power and optical wavelength became modulated as well. The optical beam is coupled to the tapered fiber (Shani et al, 1989;Alder et al, 2000), which is connected to a Mach-Zehnder fiber interferometer (Saunders et al, 1994;Jeong & Park, 1997;Laverdiere et al, 2003). An optical amplifier can be used if the interferometer output signal is too weak.…”

Section: Time-resolved Frequency Chirp Measurement Setup and Methodologymentioning

confidence: 99%

Investigation of High-Speed Transient Processes and Parameter Extraction of InGaAsP Laser Diodes

Vyšniauskas¹,

Vasiliauskas²,

Šermukšnis³

et al. 2012

Semiconductor Laser Diode Technology and Applications

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Efficient coupling of a semiconductor laser to an optical fiber by means of a tapered waveguide on silicon

Cited by 97 publications

References 5 publications

A packaged optical slot-waveguide ring resonator sensor array for multiplex label-free assays in labs-on-chips

A packaged optical slot-waveguide ring resonator sensor array for multiplex label-free assays in labs-on-chips

Adiabatic coupling between conventional dielectric waveguides and waveguides with discrete translational symmetry

Investigation of High-Speed Transient Processes and Parameter Extraction of InGaAsP Laser Diodes

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