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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 28057–28069

High-output-power, single-wavelength silicon hybrid laser using precise flip-chip bonding technology

Shinsuke Tanaka, Seok-Hwan Jeong, Shigeaki Sekiguchi, Teruo Kurahashi, Yu Tanaka, and Ken Morito  »View Author Affiliations


Optics Express, Vol. 20, Issue 27, pp. 28057-28069 (2012)
http://dx.doi.org/10.1364/OE.20.028057


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Abstract

An Si/III–V hybrid laser oscillating at a single wavelength was developed for use in a large-scale Si optical I/O chip. The laser had an InP-based reflective semiconductor optical amplifier (SOA) chip integrated with an Si wavelength-selection-mirror chip in a flip-chip configuration. A low coupling loss of 1.55 dB at the Si-SOA interface was accomplished by both mode-field-matching between Si-SOA waveguides and accurately controlling the bonding position. The fabricated Si hybrid laser exhibited a very low threshold current of 9.4 mA, a high output power of 15.0 mW, and a high wall-plug efficiency of 7.6% at 20 °C. Moreover, the device maintained a high output power of >10 mW up to 60°C due to the high thermal conductance between the SOA chip and Si substrate. The short cavity length of the flip-chip bonded laser expanded the longitudinal mode spacing. This resulted in temperature-stable single longitudinal mode lasing and a low RIN level of <−130 dB/Hz.

© 2012 OSA

OCIS Codes
(250.5300) Optoelectronics : Photonic integrated circuits
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:
Optoelectronics

History
Original Manuscript: September 5, 2012
Revised Manuscript: October 12, 2012
Manuscript Accepted: October 17, 2012
Published: December 4, 2012

Citation
Shinsuke Tanaka, Seok-Hwan Jeong, Shigeaki Sekiguchi, Teruo Kurahashi, Yu Tanaka, and Ken Morito, "High-output-power, single-wavelength silicon hybrid laser using precise flip-chip bonding technology," Opt. Express 20, 28057-28069 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-27-28057


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