Flat-focal-field integrated spectrometer using a field- flattening lens

B.I. Akça; G. Sengo; Markus Pollnau; A. Driessen; Kerstin Worhoff; R.M. de Ridder

Flat-focal-field integrated spectrometer using a field- flattening lens

B.I. Akça, G. Sengo, Markus Pollnau, A. Driessen, Kerstin Worhoff, R.M. de Ridder

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

6 Citations (Scopus)

218 Downloads (Pure)

Abstract

We present a new flat-focal-field arrayed-waveguide-grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective-index difference between slab and lens region is obtained by adding a thin silicon nitride layer to a silicon oxynitride/silicon dioxide waveguide system. As a proof-of-concept, 81-channel AWGs, with and without the lens, are designed, fabricated, and characterized. The measurements show that the lens improves the adjacent crosstalk at the peripheral channels by 2 dB and introduces only 0.4 dB of extra excess loss. A more pronounced crosstalk- improvement for AWGs with higher number of output waveguides is predicted.

Original language	English
Title of host publication	17th Annual Symposium of the IEEE Photonics Benelux Chapter
Place of Publication	Mons, Belgium
Publisher	University of Mons
Pages	29-32
Number of pages	4
ISBN (Print)	978-2-8052-0184-4
Publication status	Published - 29 Nov 2012
Event	17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012 - Mons, Belgium Duration: 29 Nov 2012 → 30 Nov 2012 Conference number: 17 http://www.telecom.fpms.ac.be/IPS_symposium2012/

Conference

Conference	17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012
Country/Territory	Belgium
City	Mons
Period	29/11/12 → 30/11/12
Internet address	http://www.telecom.fpms.ac.be/IPS_symposium2012/

Keywords

IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY

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title = "Flat-focal-field integrated spectrometer using a field- flattening lens",

abstract = "We present a new flat-focal-field arrayed-waveguide-grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective-index difference between slab and lens region is obtained by adding a thin silicon nitride layer to a silicon oxynitride/silicon dioxide waveguide system. As a proof-of-concept, 81-channel AWGs, with and without the lens, are designed, fabricated, and characterized. The measurements show that the lens improves the adjacent crosstalk at the peripheral channels by 2 dB and introduces only 0.4 dB of extra excess loss. A more pronounced crosstalk- improvement for AWGs with higher number of output waveguides is predicted.",

keywords = "IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY",

author = "B.I. Ak{\c c}a and G. Sengo and Markus Pollnau and A. Driessen and Kerstin Worhoff and {de Ridder}, R.M.",

note = "URL for the symposium: http://www.telecom.fpms.ac.be/IPS_symposium2012/; 17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012 ; Conference date: 29-11-2012 Through 30-11-2012",

year = "2012",

month = nov,

day = "29",

language = "English",

isbn = "978-2-8052-0184-4",

pages = "29--32",

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TY - GEN

T1 - Flat-focal-field integrated spectrometer using a field- flattening lens

AU - Akça, B.I.

AU - Sengo, G.

AU - Pollnau, Markus

AU - Driessen, A.

AU - Worhoff, Kerstin

AU - de Ridder, R.M.

N1 - Conference code: 17

PY - 2012/11/29

Y1 - 2012/11/29

N2 - We present a new flat-focal-field arrayed-waveguide-grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective-index difference between slab and lens region is obtained by adding a thin silicon nitride layer to a silicon oxynitride/silicon dioxide waveguide system. As a proof-of-concept, 81-channel AWGs, with and without the lens, are designed, fabricated, and characterized. The measurements show that the lens improves the adjacent crosstalk at the peripheral channels by 2 dB and introduces only 0.4 dB of extra excess loss. A more pronounced crosstalk- improvement for AWGs with higher number of output waveguides is predicted.

AB - We present a new flat-focal-field arrayed-waveguide-grating (AWG) design that utilizes an integrated field-flattening lens placed in the second star coupler. The effective-index difference between slab and lens region is obtained by adding a thin silicon nitride layer to a silicon oxynitride/silicon dioxide waveguide system. As a proof-of-concept, 81-channel AWGs, with and without the lens, are designed, fabricated, and characterized. The measurements show that the lens improves the adjacent crosstalk at the peripheral channels by 2 dB and introduces only 0.4 dB of extra excess loss. A more pronounced crosstalk- improvement for AWGs with higher number of output waveguides is predicted.

KW - IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY

M3 - Conference contribution

SN - 978-2-8052-0184-4

SP - 29

EP - 32

BT - 17th Annual Symposium of the IEEE Photonics Benelux Chapter

PB - University of Mons

CY - Mons, Belgium

T2 - 17th Annual Symposium of the IEEE Photonics Benelux Chapter 2012

Y2 - 29 November 2012 through 30 November 2012

ER -

Flat-focal-field integrated spectrometer using a field- flattening lens

Abstract

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Keywords

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