+ (1 - The Hong Kong Polytechnic University

polyu.edu.hk

+ (1 - The Hong Kong Polytechnic University

Polymer Optical Gain Media

• Expect high gain (~ 50 cm -1 ) & large bandwidth (~ 100 nm)

• Coverage of the full visible spectrum, compatible with POF

1-D DFB:

η ≈ 10%

pJ-nJ

few Hz

few ns

Pulses

Quasi 4-level:

S 1

S 0

0

1

2

Absorption

1

0

ASE

2

2-D DFB:

George Heliotis, Ruidong Xia, Paul

Stavrinou, Tom Wellinger, …..

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