Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Loss reduction for phased-array demultiplexers using a double etch technique

Not Accessible

Your library or personal account may give you access


Wavelength Division Multiplexing (WDM) is an effective technique to exploit the huge bandwidth of optical fibres. Key components in such WDM-systems are demultiplexers which spatially separate the different wavelength channels. Phased-array demultiplexers combine ease of fabrication and low insertion losses. Silica-based phased-array demultiplexers are realised with low losses from 2-3 dB [1,2]. InP-based demultiplexers show slightly higher on-chip losses of 4-6 dB [3,4]. In addition they have considerably higher fibre coupling losses (several dB’s), but the advantage of InP-based demultiplexers is that they can be integrated with active components. Earlier we reported a low-loss demultiplexer with reduced fibre coupling loss by applying deeply etched InGaAsP waveguides with a relatively large core and a low index contrast, which had an almost circular mode profile [5]. The component had 4-5 dB on-chip loss and fibre coupling loss of about 1 dB to a tapered fibre. In this article we report a method to further reduce the on-chip losses.

© 1996 Optical Society of America

PDF Article
More Like This
Extremely small AWG demultiplexer fabricated on InP by using a double-etch process

Yohan Barbarin, X.j. M. Leijtens, E.a.j. M. Bente, C M. Louzao, J R. Kooiman, and M K. Smit
IThG4 Integrated Photonics Research (IPR) 2004


L.H. Spiekman, M.B.J. Diemeer, T.H. Hoekstra, and M.K. Smit
IMC2 Integrated Photonics Research (IPR) 1996

8-channel wavelength-selective 2×2 optical switch using phased-array waveguide grating multi/demultiplexer

Haifeng Li, Wenhua Lin, Y. J. Chen, and D. Stone
CFG1 Conference on Lasers and Electro-Optics (CLEO) 1996


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription

Select as filters

Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved