A Tunable GaInAsP–InP Optical Microring Notch Filter

Grover, R.; Ibrahim, T.A.; Kanakaraju, S.; Lucas, L.; Calhoun, L.C.; Ho, P.‐T.

doi:10.1109/lpt.2003.823092

Cited by 39 publications

(7 citation statements)

References 8 publications

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“…Twentythree In 0.63 Ga 0.37 As 0.80 P 0.20 (10 nm) wells and twenty-four InP (10 nm) barriers have been used for the MQW layer (band gap of 1417 nm). The calculated MQW quadratic and the linear electro-optic coefficients at 1550 nm are s QW =3.85 × 10 -15 cm 2 /V 2 and r QW =-2.1 × 10 -10 cm/V, respectively, which are close those given [6,8] for similar epitaxial structures. With I-InGaAsP (1.05 eV band gap) on top and bottom of MQW layer, the total I region thickness is 490 nm.…”

Section: The Modulation Processsupporting

confidence: 81%

Embedded Ring Modulators and Switches

Das¹,

Sadasivan²

2017

J Laser Opt Photonics

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Micro embedded ring resonator electro-optic switching in InGaAsP based quantum well structures is briefly reviewed and all optic switching is presented. A 20Gbps electro-optic modulator with >12dB extinction ratio has been proposed using quantum confined stark effect tuning, for which a novel high speed coplanar-microstrip inverted ground plane transition has also been designed. All optical tuning is used to theoretically demonstrate a 20G packets/s switching with a 5dB switching ratio. The fabricated micro embedded ring resonator ring using e-beam lithography and Al lift off mask has been demonstrated and the measured device spectrum is found to match well with the simulated results.

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Section: The Modulation Processsupporting

confidence: 81%

Embedded Ring Modulators and Switches

Das¹,

Sadasivan²

2017

J Laser Opt Photonics

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“…Also this structure has been considered Manuscript as all pass filter and as an add-drop filter (including an extra microfiber beside the knot) with QF of 13000 [13]. For the output spectrum of a filter, the flatness and the width of both transmission and rejection regions on the spectrum are important characteristics especially for wavelength division multiplexing applications and notch filters [14], [15]. Sharper roll off, adjustable pass band and less in-band ripple spectrum provide a desired filter [15], [16].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Periodic Passband Filter Based on Coupled Microfiber Knots

Nodehi

Mohammed

Ahmad

et al. 2016

IEEE Photon. Technol. Lett.

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In this letter, a periodical passband filter based microfiber structure is proposed. The structure is made of successive microfiber knot resonators. The periodical spectral filtering is a result of superposition of the uncoupled modes that belong to the individual microfiber knots and coupling induced resonant wavelength shift. This letter demonstrates the experimental investigation of the thermal effect on the spectral modulation of the structure. The proposed resonator consists of two knots with radii 460.01 and 230 µm, which are knitted successively, in a column. This results in a periodic spectrum with 720-pm passband, 425-pm stopband, and a suppression ratio of 5.2 dB. Increasing the optical path, using a hot metal bar with a temperature of 30°close to the big knot, the periodic passband filter switches to all pass filter with a free spectral range of 1150 pm and quality factor 6000. This letter as well demonstrates experimentally how to enhance passband and stopband widths through decreasing the knot's radii as well as increasing the number of knots. Compatibility of this structure with single-mode fiber systems makes it easy to be used as noise filtering in telecommunication and fiber lasers.Index Terms-Microfiber knot, pass band filter, fiber laser.

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“…Recently, the use of active semiconductor based disk resonator devices have been reported (Djordjev et al 2002), where the response can be altered via the application of a voltage. An "active" ring resonator structure opens a wider range of applications, such as optical modulator (Xu et al 2005), tunable filters (Grover et al 2004).…”

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confidence: 99%

Design and analysis of electroabsorptive quantum well based double ring resonators for wavelength switching applications

2009

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We propose and present the design and analysis of a new double ring resonator structure for switching applications. The structure is based on the use of quantum wells that act as the active light guiding medium. The proposed ring resonator structure can be turned on or off by varying the absorption in the rings through external applied voltages. The absorption spectra are calculated for various quantum well designs using a simple model to predict the switching characteristics of double ring resonator structure. Simulation results show that amount of switching is a strong function of absorption, and is critically dependent on quantum well parameters and the applied electric field.

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A Tunable GaInAsP–InP Optical Microring Notch Filter

Cited by 39 publications

References 8 publications

Embedded Ring Modulators and Switches

Embedded Ring Modulators and Switches

Demonstration of a Periodic Passband Filter Based on Coupled Microfiber Knots

Design and analysis of electroabsorptive quantum well based double ring resonators for wavelength switching applications

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