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Compact Hybrid-Integrated 4 × 80-Gbps TROSA Module Using Optical Butt-Coupling of DML/SI-PD and Silica AWG Chips

We have developed a compact 4 × 80-Gbps transmitter-receiver optical subassembly (TROSA) module using a chip-to-chip optical butt-coupling method. For a Tx submodule, four directly modulated laser (DML) chips precisely bonded on a silicon DML-carrier are simultaneously butt-coupled to a vertically polished silica-based arrayed waveguide grating (AWG) chip, revealing good optical characteristics insensitive to external optical feedback. A Rx submodule is realized by passive alignment between a 45°-polished AWG and four surface-illuminated (SI)-PD chips, and subsequently integrated with the Tx submodule into a single package case to form the compact TROSA module whose size is only 25 mm × 15 mm × 6.4 mm and compliant to fit into the QSFP-DD/OSFP transceiver. The fabricated TROSA module shows clear Tx optical eye patterns at 80-Gbps PAM4 signals for all channels, achieving the Rx sensitivities within -7.1~-6 dBm at a bit error rate (BER) of 2.4 × 10 -4 .

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.8 April 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 2468 - 2475

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

DATACENTER
DIRECTLY MODULATED LASER (DML)
4-LEVEL PULSE AMPLITUDE MODULATION (PAM4)
SURFACE-ILLUMINATED (SI)-PD
TRANSMITTER-RECEIVER OPTICAL SUBASSEMBLY (TROSA)
SILICA-BASED PLANAR LIGHTWAVE CIRCUIT (PLC)
OPTICAL BUTT-COUPLING

Info Detail Spesifik

DOI: 10.1109/JLT.2021.3051067

Pernyataan Tanggungjawab

Seok-Jun Yun, Young-Tak Han, Seok-Tae Kim, Jang-Uk Shin, Sang-Ho Park, Dong-Hoon Lee, Seo-Young Lee, Yongsoon Baek

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