Nd-doped polymer waveguide amplifiers

Autor: Jing Yang, Markus Pollnau, Alfred Driessen, Mart Diemeer, Gabriel Sengo

Publikováno v: IEEE journal of quantum electronics, 46(7), 1043-1050. IEEE

Nd3+-complex-doped polymer channel waveguide amplifiers with various lengths and Nd3+ concentrations are fabricated by a simple procedure. Internal net gain at 840-950 nm and 1064 nm is experimentally and theoretically investigated under continuous-w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e648e63774a3810bff2ff74e31e6e5f
https://doi.org/10.1109/jqe.2010.2043218

Characterization of Vertically Waveguide Coupled Microring Resonators by Means of Quantitative Image Analysis

Autor: H. Kelderman, Alfred Driessen, Gabriel Sengo, F.S. Tan, D.J.W. Klunder, A.J.F. Hollink, Hugo Hoekstra

Publikováno v: Journal of Nonlinear Optical Physics & Materials. 12:205-212

The standard method of measuring the response of a micro resonator with in- and output waveguides consists of detecting the output power as a function of wavelength. In this paper a complementary method by means of quantitative image analysis is prop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c6dc122c9bc2b1916933a516a26a7f9
https://doi.org/10.1142/s021886350300133x

Vertically and laterally waveguide-coupled cylindrical microresonators in Si3N4 on SiO2 technology

Autor: Hugo Hoekstra, H.F. Bulthuis, D.J.W. Klunder, Gabriel Sengo, E. Krioukov, Cornelis Otto, F.S. Tan, Alfred Driessen, T. van der Veen

Publikováno v: Applied physics B: Lasers and optics, 73, 603-608. Springer

High-finesse laterally and vertically waveguide-coupled cylindrical microresonators have been designed and realized in Si3N4 on SiO2 technology using conventional optical lithography. Based on the experimental results and detailed simulations, a comp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eef2720a4be95fb0c390d0ce2f7fcd6c
https://doi.org/10.1007/s003400100705

Broad-spectral-range synchronized flat-top arrayed-waveguide grating applied in a 225-channel cascaded spectrometer

Autor: Kerstin Worhoff, B.I. Akça, Gabriel Sengo, R.M. de Ridder, Markus Pollnau, Christopher Richard Doerr

Publikováno v: Scopus-Elsevier
Optics express, 20(16):18318. The Optical Society
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC

Summary form only given. There is a strong need for arrayed waveguide gratings (AWGs) with low-loss and box-like pass band over a broad spectral range. Most of the approaches proposed to implement flat-top AWGs suffer from increased insertion loss an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d047c5640db2c7b4a54f29fa71305ec
https://doi.org/10.1109/cleoe-iqec.2013.6801409

Toward spectral-domain optical coherence tomography on a chip

Autor: Alfred Driessen, Jeroen Kalkman, R.M. de Ridder, B.I. Akça, T. G. van Leeuwen, F. Sun, V. D. Nguyen, Nur Ismail, Kerstin Worhoff, Markus Pollnau, Gabriel Sengo

Publikováno v: IEEE journal of selected topics in quantum electronics, 18(3), 1223-1233. IEEE
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 18(3), 1223-1233. Institute of Electrical and Electronics Engineers Inc.

We present experimental results of a spectral-domain optical coherence tomography system based on an integrated optical spectrometer. A 195-channel arrayed-waveguide-grating (AWG) spectrometer with 0.4-nm channel spacing centered at 1300 nm and a 125

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d5f12a5b54f1c852eee0bcdfe111b80
https://research.utwente.nl/en/publications/d68bf90a-6261-4570-b7a0-6de7d11c521c