Characterization of line-defect-waveguide lasers in two-dimensional photonic-crystal slabs

Sugitatsu, Atsushi; Asano, Tanemasa; Noda, Susumu

doi:10.1063/1.1767285

Cited by 44 publications

(21 citation statements)

References 10 publications

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“…It can be widely used in the field of optic communications such as beam splitter and wavelength division multiplexing (WDM) system. [1][2][3][4][5][6][7][8][9] To fabricate ultracompact PC devices, the critical interval for the existence of coupling between the PC waveguides should be known firstly. In this article we studied the minimum interval of Y-branch PC waveguide, where the traveling waves could pass through independently.…”

Section: Introductionmentioning

confidence: 99%

Y-Type Photonic Crystal Waveguide With Minimum Branches Space

et al. 2006

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The abstract should summarize the context, content and conclusions of the paper in less than 200 words. We fabricated a two-dimensional Y-branch photonic crystal waveguide in the near infrared region by using focused ion beam etching and depositing system. The light guide characters of the waveguide were measured for three different spaces between branches. Field intensity distributions of TE polarized wave in the branches were simulated by using the transfer matrix method. Both the theoretical and experimental results show that the shortest space between branches of the photonic crystal waveguide is about 1.4 times wavelength of transmitted light. If the space became shorter, the light in the two branches would couple to each other seriously. This result might be helpful for the design of compact wave demultiplexer and all-optical integrated circuits.

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Section: Introductionmentioning

confidence: 99%

Y-Type Photonic Crystal Waveguide With Minimum Branches Space

et al. 2006

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“…[7][8] Third, photonic crystal lasers can also be achieved with the effect of slow light. [9][10] [11] [12] The group velocity of light whose frequency located in the band-edge is very low. Then the confinement and the gain of those photons are so strongly enhanced that the lasing oscillation can become true.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of slow light phenomenon in photonic crystal waveguide line defect laser

Xing¹,

Ren²,

Chen³

et al. 2008

2008 International Workshop on Metamaterials

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The guide mode whose frequency locates in the band edge in photonic crystal single line defect waveguide has very low group velocity. So the confinement and gain of electromagnetic field in the band edge are strongly enhanced. Photonic crystal waveguide laser is fabricated and the slow light phenomenon is investigated. The laser is pumped by pulsed pumping light at 980nm whose duty ratio is 0.05%. The active layer in photonic crystal slab is InGaAsP multiple quantum well. Light is transimited by a photonic crystal chirp waveguide in one facet of the laser. Then the output light is coupled to a fiber and the character of laser is analysis by an optical spectrometer. It is found that single mode and multimode happens with different power of pumping light. Meanwhile the plane wave expansion and finite-difference time-domain methods are used to simulate the phenomenon of slow light. And the result of the experiment is compared with the theory which proves the slow light results in lasing oscillation.)

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“…Many optical devices based on photonic crystal have been realised [3 -8]. Particularly, the photonic crystal microlaser has attracted more attention not only because it possesses an ultra-low threshold and ultra-small mode volume but also because it is a potential light source for future photonic integrated circuits [4][5][6][7][8]. A highly efficient edge-emitting microlaser based on slow light effect has been realised in our group, which is suitable for planar integration [9].…”

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confidence: 99%

Tunable edge-emitting microlaser on photonic crystal slab

et al. 2009

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A tunable edge-emitting microlaser is realised by a chirped line-defect photonic crystal waveguide. A tunable range of 57 nm is obtained experimentally.Introduction: Photonic crystals can effectively modulate the density of photon states and manipulate the light on a nanometre scale [1,2]. Many optical devices based on photonic crystal have been realised [3 -8]. Particularly, the photonic crystal microlaser has attracted more attention not only because it possesses an ultra-low threshold and ultra-small mode volume but also because it is a potential light source for future photonic integrated circuits [4][5][6][7][8]. A highly efficient edge-emitting microlaser based on slow light effect has been realised in our group, which is suitable for planar integration [9]. In many applications such as optical communication, information processing, optical sensors and spectrum analysis, the tunable laser is crucial. Several groups [10,11] have attempted to obtain multiple wavelengths lasing in microcavities, however till now only PC laser arrays have been achieved. Apparently the laser arrays have the disadvantage of having to be integrated with other photonic crystal components. In this Letter, we propose a single output port PC laser device in which the resonant build up depends on the cavity position. From the single output port, multiple wavelength lasers are expected. Such a tunable edge-emitting microlaser was designed and fabricated based on a chirped photonic crystal waveguide [9]. A tunable range of 57 nm was obtained.

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Characterization of line-defect-waveguide lasers in two-dimensional photonic-crystal slabs

Cited by 44 publications

References 10 publications

Y-Type Photonic Crystal Waveguide With Minimum Branches Space

Y-Type Photonic Crystal Waveguide With Minimum Branches Space

Experimental investigation of slow light phenomenon in photonic crystal waveguide line defect laser

Tunable edge-emitting microlaser on photonic crystal slab

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