NDLI: A 24-Channel, 300 Gb/s, 8.2 pJ/bit, Full-Duplex Fiber-Coupled Optical Transceiver Module Based on a Single “Holey” CMOS IC

Content Provider	IEEE Xplore Digital Library
Author	Schow, C.L. Doany, F.E. Rylyakov, A.V. Lee, B.G. Jahnes, C.V. Kwark, Y.H. Baks, C.W. Kuchta, D.M. Kash, J.A.
Copyright Year	1983
Abstract	We report here on the design, fabrication, and high-speed performance of a compact 48-channel optical transceiver module enabled by a key novel component: a “holey” Optochip. A single CMOS transceiver chip with 24 receiver (RX) and 24 laser diode driver circuits, measuring 5.2 mm × 5.8 mm, becomes a holey Optochip with the fabrication of forty-eight through-substrate optical vias (holes): one for each transmitter (TX) and RX channel. Twenty-four channel, 850-nm VCSEL and photodiode arrays are directly flip-chip soldered to the Optochip with their active devices centered on the optical vias such that optical I/O is accessed through the substrate of the CMOS IC. The holey Optochip approach offers numerous advantages: 1) full compatibility with top emitting/detecting 850-nm VCSELs/PDs that are currently produced in high volumes; 2) close integration of the VCSEL/PD devices with their drive electronics for optimized high-speed performance; 3) a small-footprint, chip-scale package that minimizes CMOS die cost while maximizing transceiver packing density; 4) direct coupling to standard 4 × 12 multimode fiber arrays through a 2-lens optical system; and 5) straightforward scaling to larger 2-D arrays of TX and RX channels. Complete transceiver modules, or holey Optomodules, have been produced by flip-chip soldering assembled Optochips to high-density, high-speed organic carriers. A pluggable connector soldered to the bottom of the Optomodule provides all module electrical I/O. The Optomodule footprint, dictated by the 1-mm connector pitch, is 21 mm × 21 mm. Fully functional holey Optomodules with 24 TX and 24 RX channels operate up to 12.5 Gb/s/ch achieving efficiencies (including both TX and RX) of 8.2 pJ/bit. The aggregate 300-Gb/s bi-directional data rate is the highest ever reported for single-chip transceiver modules.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	542
Ending Page	553
Page Count	12
File Size	3160008
File Format	PDF
ISSN	07338724
Volume Number	29
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High speed optical techniques Optical fibers Optical transmitters Vertical cavity surface emitting lasers Optical receivers Integrated optics semiconductor lasers CMOS analog integrated circuits crosstalk driver circuits optical communication optical receivers optoelectronic devices photodetectors photodiodes semiconductor laser arrays
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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