NDLI: 1.3-/spl mu/m uncooled DFB laser-diode module with a coupled differential feed for 10-Gb/s ethernet applications

Content Provider	IEEE Xplore Digital Library
Author	Sakai, K. Aruga, H. Takagi, S.-I. Kawano, M. Negishi, M. Kondoh, Y. Kaneko, S.-I.
Copyright Year	1983
Abstract	A coaxial 10-Gb/s 1.3-/spl mu/m distributed feedback (DFB) laser-diode module with a coupled differential feed has been developed. The differential cascaded feed with the characteristic impedance of 100 /spl Omega/, which consists of a 140-/spl Omega/ ground-signal-signal-ground (GSSG) leads, a small-sized 60-/spl Omega/ feed-through, and a 140-/spl Omega/ wire-bonding pad, provides less sensitivity to the lead length. Integrating with 25-/spl Omega/ matching resistances and a 60-/spl Omega/ differential microstrip line, whose length corresponds to one eighth of wavelength at 7 GHz, gives wide-band impedance matching between the feed and the laser diode portion with small power loss. Experiment shows good return loss of greater than 9 dB at 10 GHz, and small change of bit error rate (BER) up to the lead length of 4 mm. With a newly developed 250-/spl mu/m cavity laser chip, we have demonstrated stable eye diagrams with the mask margins of 31 and 29% at case temperature of 0 and 85/spl deg/C, respectively.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	574
Ending Page	581
Page Count	8
File Size	455548
File Format	PDF
ISSN	07338724
Volume Number	22
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical coupling Feeds Ethernet networks Distributed feedback devices Laser feedback Quantum cascade lasers Bit error rate Coaxial components Impedance Microstrip
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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