NEWTON: NEw Widely Tunable lasers for Optical Networks

1
NEWTONNEw Widely Tunable lasers for Optical
Networks

• Main Objective
• To develop and experimentally investigate new
  types of widely tunable laser diodes.

2
Consortium

• Interuniversity Micro Electronics Centre (IMEC)
• Intune Technologies Ltd.
• ADC Inc.
• Technical University Munich

You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)
3
Technical Approach (1)

• Sampled Grating Y-branch laser

reflector 1
Top view
Cross sections
p-InP
p-InP
p-InP
n-InP
n-InP
n-InP
You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)
4
Technical Approach (2)

• Sampled Grating Tunable Twin-Guide laser (SG-TTG
  laser)

I
t
p-InP
L
n-InP
g2
grating
tuning
active
grating
p-InP
p-InP
I
a
Longitudinal/tranverse structure
Cross section
You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)
5
Technical Approach (3)

• Sampled Grating Ring Resonator laser

Top view
active section
phase control
reflector
ring resonator
You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)
6
Achievements/ Results I
Design of Sampled Grating Y-branch laser

• The additive Vernier effect gives a high
  rejection of neighboring reflection peaks,
  compared to the multiplicative Vernier effect
  used in the SSG-DBR laser.

You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)
7
Achievements/ Results II

• Modelling/Design of SG-TTG laser
• Very strong mode rejection when Bragg peaks from
  two sections overlap
• and very simple tuning scheme.

Wavelength vs. tuning currents
Side mode rejection
You are watching NEWTON NEw Widely Tunable
Lasers for Optical Networks Category (please
leave void)