Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 36,
  • Issue 11,
  • pp. 2051-2058
  • (2018)

Silicon-Based Hybrid (de)Multiplexer for Wavelength-/Polarization-Division-Multiplexing

Not Accessible

Your library or personal account may give you access

Abstract

A novel hybrid multiplexer for wavelength-division- multiplexing (WDM) and polarization-division-multiplexing (PDM) is proposed and realized by integrating a polarization-splitter-rotator (PSR) and an optical-filter array based on novel microring resonators (MRRs). With the PSR, the launched TM-polarized light is rotated to be TE-polarized and outputs from the cross port while the launched TE-polarized light outputs from the through port directly. In the proposed novel configuration, the cross- and through-ports of the PSR are connected through the bus waveguide for all the MRR-based optical filters. In this way, each MRR-based optical filter works bidirectionally and has two drop ports, from which the same wavelength channel of TE- and TM-polarizations are dropped separately. As an example, a 16-channel hybrid WDM-PDM multiplexer is designed and realized with eight wavelength channels and dual polarizations by integrating a PSR and eight MRR-based optical filters with box-like responses. The fabricated PSR has an excess loss of ∼0.6 dB and an extinction ratio (ER) of ∼20 dB in the wavelength range from 1550 to 1580 nm. The optical filters are designed by using cascaded MRRs with bent directional couplers, which works for TE polarization only with very high ER (>35 dB) and, thus, reduces the polarization crosstalk greatly. For the MRR-based optical filters of the present hybrid (de)multiplexer, the channel spacing is 400 GHz (3.2 nm), the crosstalk between the adjacent channels is <−25 dB, and the 3 dB bandwidth is as large as 250 GHz (2 nm). For the demonstrated 16-channel hybrid (de)multiplexer, the on-chip loss is ∼3 dB for all the channels and the footprint is 500 μm × 300 μm. The present hybrid (de)multiplexer can be extended for more channels by reducing the channel spacing as well as increasing the free-spectral range of the MRRs.

© 2017 IEEE

PDF Article
More Like This
Silicon-based hybrid demultiplexer for wavelength- and mode-division multiplexing

Ying Tan, Hao Wu, Shipeng Wang, Chenlei Li, and Daoxin Dai
Opt. Lett. 43(9) 1962-1965 (2018)

Monolithically integrated 128-channel hybrid mode/polarization/wavelength (de)multiplexer on silicon-on-insulator

Hang Yu, Donghe Tu, Yuxiang Yin, Lei Jiang, Zhiguo Yu, Huan Guan, and Zhiyong Li
Opt. Express 31(25) 41034-41045 (2023)

Cited By

You do not have subscription access to this journal. Cited by 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
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved