Detection of high-speed optical modulation signal by using difference frequency generation in periodically-poled LiTaO3

2007 ◽  
Author(s):  
Hiroshi Murata ◽  
Yasuyuki Okamura
Keyword(s):  
High Speed ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Optical Modulation ◽  
Periodically Poled ◽  
Modulation Signal ◽  
Frequency Generation

scholarly journals Detection of an Optical Signal Using Difference Frequency Generation in a Periodically Poled LiTaO3 Microwave Waveguide

2008 ◽  
Vol 2008 ◽  
pp. 1-6
Author(s):  
Hiroshi Murata ◽  
Yasuyuki Okamura
Keyword(s):  
High Speed ◽  
Difference Frequency Generation ◽  
Optical Signal ◽  
Optical Clock ◽  
Difference Frequency ◽  
Interesting Application ◽  
Nonlinear Optical Effect ◽  
Periodically Poled ◽  
Frequency Generation ◽  
Good Agreement

The detection of an optical signal modulated at 15 GHz was demonstrated experimentally by using difference frequency generation based on a second-order nonlinear optical effect in a periodically poled LiTaO3 microwave rectangular waveguide. The measured frequency dependence of the generated microwave signal was in good agreement with the theoretically expected result. An interesting application of the proposed device is the detection of high-speed optical clock detection.

QUASI-PHASE-MATCHED DIFFERENCE-FREQUENCY GENERATION IN NONLINEAR OPTICAL POLYMER WAVEGUIDES

2004 ◽  
Vol 13 (03n04) ◽  
pp. 391-396 ◽  
Author(s):  
MYUNG-HYUN LEE ◽  
JUNG JIN JU ◽  
MIN-SU KIM ◽  
JUNG YUN DO ◽  
SEUNG KOO PARK ◽  
...  
Keyword(s):  
Communication Systems ◽  
Nonlinear Optical ◽  
Optical Fiber Communication ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Wavelength Converter ◽  
Polymer Waveguides ◽  
Periodically Poled ◽  
Chain Polymer ◽  
Frequency Generation

Nonlinear optical (NLO) polymer is emerging as a new alternative material for a wavelength converter in optical fiber communication systems. We designed and synthesized a polyetherimide-based side-chain polymer with a 4-(dialkylamino)-4′(-(styrylsulfonyl)-stilbene chromophore as a new NLO polymer. We designed and fabricated periodically-poled NLO polymer waveguides for the wavelength converter. Difference-frequency generation (DFG) process with a quasi-phase-matching (QPM) scheme was used. For the first time, we demonstrated a wavelength converter with a DFG conversion efficiency of -47 dB in the periodically-poled NLO polymer waveguides, operating at ~ 1.55 μm.

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