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Emerging Opportunities: Nano-Photonics & Information Technology. Connie Chang-Hasnain EECS University of California, Berkeley. 10 7. . . . . 10 6. .  WHAT’S NEXT ??  WDM + Optical Amplifiers  Optical Amplifiers  Coherent Detection  1.5 m Single-Frequency Laser

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Emerging opportunities nano photonics information technology

Emerging Opportunities: Nano-Photonics & Information Technology

Connie Chang-Hasnain

EECS

University of California, Berkeley



Advances in optical communications

107

106

WHAT’S NEXT??

 WDM + Optical Amplifiers

Optical Amplifiers

Coherent Detection

1.5m Single-Frequency Laser

1.3m SM Fiber

0.8m MM Fiber

105

104

103

Bit Rate -Distance ( Gb/s km)

102

101

1

1970 1975 1980 1985 1990 1995 2000 2005

Year

Advances in Optical Communications

Coax, 274 Mb/s at 1km repeater spacing

  • 107 Increase in Bit rate-Distance Product in 25 years

Source: Tingye Li and Herwig Kogelnik

Chang-Hasnain, UCB


Opportunities in optoelectronics
Opportunities in Optoelectronics

  • Active Devices  Faster, Better, Smaller, New Functions

    • Examples: lasers, detectors, modulators, amplifiers, freq. mixer

    • New functions: wavelength tuning, beam steering, UV and FIR

  • Passive Devices  Better, Smaller, New Functions

    • Examples: Wavelength multiplexers, resonators, filters, couplers

    • New functions: thin film non-reciprocal devices

  • Leverage the Coherence Property

    • All-optical buffer and random access memory (RAM)

    • Optical signal processing

  • Integration!

    • Monolithic

    • Heterogeneous

Chang-Hasnain, UCB


Opportunities in optoelectronics1
Opportunities in Optoelectronics

Nanoscale Material Synthesis

  • Active Devices  Faster, Better, Smaller, New Functions

    • Examples: lasers, detectors, modulators, amplifiers, freq. mixer

    • New functions: wavelength tuning, beam steering, UV and FIR

  • Passive Devices  Better, Smaller, New Functions

    • Examples: Wavelength multiplexers, resonators, filters, couplers

    • New functions: thin film non-reciprocal devices

  • Leverage the Coherence Property

    • All-optical buffer and random access memory (RAM)

    • Optical signal processing

  • Integration!

    • Monolithic

    • Heterogeneous

Nanoscale Processing

Integrated Optoelectronics

Chang-Hasnain, UCB


Tailorable active materials

Quantum Wire

Quantum Dot

Quantum Well

Bulk

Tailorable Active Materials

  • Greatly Enhanced or Suppressed

    • Optical Gain

    • Spontaneous Emission

    • Optical Nonlinearities

Yang, Berkeley

Density of States

Energy (hn)

Chang-Hasnain, UCB


Active material synthesis

Chang-Hasnain, Berkeley

Dapkus, USC

Weber, Berkeley

Active Material Synthesis

  • Major Challenges

    • Uniformity Control

    • Size Control

    • Placement Control

    • Defect Reduction

Chang-Hasnain, UCB


Compact integrated optics photonic crystals

Zuzuki, Berkeley

Compact Integrated Optics: Photonic Crystals

  • Making Passive Optics 1000 Times Smaller

Chang-Hasnain, UCB


Slow light and frozen light

Signal slow down

pump

Multiple

stacked QD

Slow Light and Frozen Light

  • Slow light demonstrated in atomic vapor at low temperature, 1999

  • We proposed all-optical buffers in ‘00.

  • DARPA funded program in 2002

  • New BAA on Intelligent Optical Network coming out in March.

Chang-Hasnain, Berkeley

P. C. Ku, et.al. Electron. Lett. 2002

Chang-Hasnain, UCB


Bio photonics
Bio-Photonics

  • DARPA Centers

    • U of Illinois Urbana-Champaign, Berkeley, Colorado State, Columbia,

    • Cornell, Harvard

Chang-Hasnain, UCB


Integration

InGaN LEDs on Si

200 mm

Integration

  • Monolithic

    • Princeton University

      • “If you can draw it, we can build it.”

      • Vertical coupling of light via lateral tapers.

      • Single growth step.

  • Heterogeneous

    • UC Berkeley

    • Paste-and-Cut Approach

      • Ion Cut

      • Laser Lift-off

Cheung and Sands, Berkeley

Chang-Hasnain, UCB


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