Dr. Yukta P. Timalsina Profile

Dr. Yukta P. Timalsina

at SUNY Polytechnic Institute

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Author

Publications (8)

Proceedings Article | 12 March 2024 Poster + Paper

Automated measurement flow for PDK development in a 300 mm silicon photonics foundry

Javery Mann, Amit Dikshit, M. Jobayer Hossain, M. Rakib Uddin, Jin Wallner, Anthony Aiello, Lewis Carpenter, Yukta Timalsina, George Nelson, Nicholas Fahrenkopf, David Harame

Proceedings Volume 12891, 128910T (2024) https://doi.org/10.1117/12.3005454

KEYWORDS: Automation, Silicon photonics, Semiconducting wafers, Photonics, Optical alignment, Electrooptics, Quantum photonics, Prototyping, Optical gratings, Sensors

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As silicon photonics-based circuit designs transition from lab to fab, an end-to-end automated measurement flow is required to address a unique combination of high flexibility in test conditions and high volume. This paper describes such a flow for process design kit (PDK) development in the state-of-the-art 300 mm CMOS-compatible silicon photonics foundry at the Albany NanoTech Complex in Albany, NY. Presenting details of this measurement flow will offer considerable cost and time savings to new users in this area. The measurement flow begins at the layout stage, where users can instantiate various combinations of pre-characterized padsets that contain DC/RF pads and optical couplers, which are compatible with the automated electro-optic setup used for measurements. These padsets are offered via two options: (1) a script-based layout builder tool or (2) a parametric cell in a “Measurement Design Kit” offering in a design automation platform, which is an analog to a PDK. Special marker layers are added to the padsets, whose coordinates are extracted after the layout is complete. The coordinates are then passed to fiber positioners on the semi-automated prober while performing measurements. Electro-optic measurements are performed across the wafer using vertical coupling, which is well-suited for large-scale measurements. The wafer is placed on a 300 mm prober with automated fiber positioners that can optimize optical coupling across six degrees of freedom. The electro-optic measurement setup is based on the Keysight Photonic Application Suite. It includes a tunable laser, polarization synthesizer, and multi-channel detectors that measure transmission in both TE and TM polarizations. A lowloss optical switch matrix is programmed to switch connections between lasers and detectors to 16 grating couplers in the padset. The entire measurement setup, including the prober and instruments, is driven using the Python-based SweepMe! automation framework, which is modular and allows for the easy creation of test plans.

Proceedings Article | 12 March 2024 Presentation + Paper

A vertical-junction carrier-injection micro-ring modulator fabricated in AIM Photonics’ quantum FLEX platform

M. Rakib Uddin, Jin Wallner, Amit Dikshit, Yukta Timalsina, Javery Mann, M. Jobayer Hossain, Gerald Leake, Nicholas Fahrenkopf, Christopher Baiocco, David Harame

Proceedings Volume 12891, 128910I (2024) https://doi.org/10.1117/12.2692688

KEYWORDS: Waveguides, Quantum photonics, Microrings, Silicon, Quantum efficiency, Modulation, Windows, Tunable lasers, Optical gratings, Doping

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Proceedings Article | 17 March 2023 Poster + Paper

Cascaded ring resonator based wide stop-band filter fabricated in AIM photonics technology at Albany Nanotech Complex

M. Rakib Uddin, Jin Wallner, Amit Dikshit, M. Jobayer Hossain, Yukta Timalsina, Nicholas Fahrenkopf, David Harame

Proceedings Volume 12424, 124240U (2023) https://doi.org/10.1117/12.2649056

KEYWORDS: Tunable filters, Resonators, Waveguides, Photonics, Nanotechnology, Optical filters, Fabrication, Semiconducting wafers, Nanolithography, Silicon

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Proceedings Article | 17 March 2023 Presentation + Paper

Design enablement methodology for silicon photonics-based photonic integrated design

Amit Dikshit, Jin Wallner, M. Rakib Uddin, M. Jobayer Hossain, Javery Mann, Amir Begovic, Yukta Timalsina, Lewis Carpenter, Gerald Leake, Christopher Baiocco, Colin McDonough, Nicholas Fahrenkopf, Chandra Cotter, Christopher Striemer, David Harame

Proceedings Volume 12424, 124240D (2023) https://doi.org/10.1117/12.2651445

KEYWORDS: Design and modelling, Waveguides, Silicon photonics, Electro optical modeling, Photonic integrated circuits, Simulations, Data modeling, Performance modeling, Statistical modeling, Integrated photonics

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Proceedings Article | 14 March 2023 Poster + Paper

A compact ring modulator with very large extinction ratio and high quality factor fabricated in AIM photonics technology at Albany Nanotech Complex

M. Rakib Uddin, Jin Wallner, Amit Dikshit, M. Jobayer Hossain, Yukta Timalsina, Nicholas Fahrenkopf, David Harame

Proceedings Volume 12417, 124170W (2023) https://doi.org/10.1117/12.2648994

KEYWORDS: Waveguides, Silicon, Refractive index, Photonics, Nanotechnology, Signal attenuation, Modulation, Design and modelling, Wavelength division multiplexing, Doping

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Proceedings Article | 5 March 2022 Presentation + Paper

SUNY Poly foundry process design kit: a unique design enablement platform for photonic integrated circuit design

Amit Dikshit, Jin Wallner, Barton Bergman, M. Rakib Uddin, Lewis Carpenter, Yukta Timalsina, Amir Begović, Chandra Casline Cotter, Nicholas Fahrenkopf, Christopher Baiocco, Gerald Leake, David Harame

Proceedings Volume 12006, 120060I (2022) https://doi.org/10.1117/12.2608729

KEYWORDS: Design and modelling, Statistical modeling, Photonic devices, Photonic integrated circuits, Integrated circuit design, Manufacturing, Waveguides, Silicon photonics, Sensors, Nanotechnology, Standards development, Licensing

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Proceedings Article | 5 March 2022 Presentation + Paper

A unique structured carrier injection micro-ring modulator with large extinction ratio and high modulation efficiency

M. Rakib Uddin, Jin Wallner, Amit Dikshit, Yukta Timalsina, Nicholas Fahrenkopf, David Harame

Proceedings Volume 12006, 120060J (2022) https://doi.org/10.1117/12.2609607

KEYWORDS: Modulators, Modulation, Waveguides, Silicon, Microrings, Wavelength division multiplexing, Refractive index, Photonics, Integrated photonics, Doping

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Proceedings Article | 5 March 2022 Presentation + Paper

Low losses in an active silicon photonic multi-project wafer runs

Lewis Carpenter, Amir Begovic, Yukta Timalsina, Alin Antohe, Amit Dikshit, Christopher Baiocco, Gerald Leake, Nicholas Fahrenkopf, David Harame

Proceedings Volume 12006, 1200602 (2022) https://doi.org/10.1117/12.2609355

KEYWORDS: Waveguides, Silicon, Wave propagation, Silicon photonics, Photonics, Semiconducting wafers, Photodiodes, Modulators, Modulation, Optoelectronics

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Showing 5 of 8 publications

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