Development of compact and low-crosstalk PLC-WDM filters for hybrid-integrated bidirectional optical transceivers

Author

Kim, Kyoung-Youm ; Kim, Se Yoon ; Kim, Myoung Won ; Jung, Suntae

Author_Institution

Telecommun. R&D Center, Samsung Electron. Co. Ltd., Gyeonggi, South Korea

Volume

23

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1913

Lastpage

1917

Abstract

This paper reports on the development of planar-lightwave-circuit wavelength-division-multiplexing (PLC-WDM) filters based on double polynomial curve directional couplers, which will be integrated into compact and low-cost bidirectional optical transceivers for FTTx systems. Silica-based PLC-WDM filters smaller than 5 mm×100 μm for Ethernet passive optical network (E-PON) applications were designed and fabricated to have low bidirectional crosstalk (lower than -40 dB) as well as low insertion losses (lower than 1 dB) within the operating temperatures of -40 to 80°C. Several features and design guides that can reduce the size of directional couplers and improve the level of bidirectional crosstalk are discussed.

Keywords

hybrid integrated circuits; integrated optics; integrated optoelectronics; optical communication equipment; optical crosstalk; optical design techniques; optical directional couplers; optical fibre LAN; optical fibre fabrication; optical fibre losses; optical filters; silicon compounds; transceivers; wavelength division multiplexing; -40 to 80 degC; Ethernet; PLC-WDM filters; bidirectional transceivers; compact filters; double polynomial curve couplers; hybrid-integrated transceivers; low bidirectional crosstalk; low insertion losses; low-crosstalk filters; optical design; optical fabrication; optical transceivers; passive optical network; planar-lightwave circuit fibers; silica-based filters; wavelength-division-multiplexing; Directional couplers; Integrated optics; Optical crosstalk; Optical design; Optical filters; Optical losses; Passive filters; Passive optical networks; Polynomials; Transceivers; Directional coupler; optical filter; waveguide; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2005.846888

Filename

1430789