NDLI: Planar lightwave circuits for PON applications

Content Provider	IEEE Xplore Digital Library
Author	McGreer, K.A. Hao Xu Ho, C. Kheraj, N. Qing Zhu Stiller, M. Lam, J.
Copyright Year	2006
Description	Author affiliation: Neophotonics, San Jose, CA, USA (McGreer, K.A.; Hao Xu; Ho, C.; Kheraj, N.; Qing Zhu; Stiller, M.; Lam, J.)
Abstract	Many components used in passive optical networks (PONs) can be fabricated on a planar lightwave circuit (PLC). These include 1/spl times/N splitters, 2/spl times/N splitters and video overlay filters. A broadband 2/spl times/2 splitter is a critical component for PON. A directional coupler and even a single stage Mach-Zehnder is unsuitable for this application because each provides a splitting ratio that has excessive wavelength dependence. We demonstrate a PLC-based, broadband 2/spl times/2 splitter constructed from a two-stage lattice filter that has low loss and high uniformity from 1260 nm to 1625 nm. Y-branch splitters can be cascaded to make 1/spl times/N splitters or integrated with a 2/spl times/2 splitter to make 2/spl times/N splitters. We compare insertion loss and uniformity for splitters that are fabricated with silica on silicon technology versus silica on quartz technology. By using silica on quartz technology, we demonstrate low-loss 1/spl times/32 splitters. The 2/spl times/32 splitter has increased functionality with negligible loss penalty. We demonstrate that PLC-based splitters satisfy all reliability requirements. A video overlay filter can be used for video overlay onto a bidirectional, digital, fiber optic communication system. The video overlay uses 1550 nm light, while the digital communication system either uses 1310 nm light in both directions or uses 1310 nm light for one direction and 1490 nm light in the other direction. With PLC technology, the filter is based on integrated Mach-Zehnders. We also demonstrate a video overlay filter designed for digital channels using both 1310 nm light and 1490 nm light.
File Size	3927036
File Format	PDF
ISBN	1557528039
DOI	10.1109/OFC.2006.215668
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-03-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	OSA
Subject Keyword	Circuits Passive optical networks Silicon compounds Programmable control Digital filters Optical fiber filters Optical filters Directional couplers Lattices Insertion loss
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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