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A Review of PLC-Based Broadband Two-Mode Multi/Demultiplexer Designed by Wavefront Matching Method
Eri TAGUCHI Takeshi FUJISAWA Yoko YAMASHITA Shuntaro MAKINO Nobutomo HANZAWA Taiji SAKAMOTO Takashi MATSUI Kyozo TSUJIKAWA Kazuhide NAKAJIMA Fumihiko YAMAMOTO Kunimasa SAITOH
IEICE TRANSACTIONS on Electronics
Publication Date: 2018/07/01
Online ISSN: 1745-1353
Type of Manuscript: INVITED PAPER (Special Section on Distinguished Papers in Photonics)
WFM method, PLC, MDM, mode multi/demultiplexer,
Full Text: FreePDF(1.8MB)
A PLC based mode multi/demultiplexer based on asymmetric directional coupler has advantages in terms of compactness, mass productivity, low insertion loss, and matured reliability. However, it has relatively large wavelength dependence due to the difference of coupling length. To expand the bandwidth, we have designed two-mode (LP01/LP11a) multi/demultiplexer by wavefront matching method and demonstrated the broadband and low-loss characteristics. This paper reviews the device design by wavefront matching method and investigates the mechanism of its broadband characteristics.