Electro-optic Polymers and Devices - Revision history

Cmditradmin at 20:26, 29 December 2009

2009-12-29T20:26:51Z

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			[[category:second order NLO]]
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2009-12-29T20:26:31Z

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			[[category:photonics applications]]
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2009-09-14T16:52:30Z

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	~~<table id="toc" style="width: 100%">~~
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	~~<td style="text-align: left; width: 33%">[[Passive Optical Polymers\|Previous Topic]]</td>~~
	~~<td style="text-align: center; width: 33%">[[Main_Page#Organic Photonics Applications in Information Technology\|Return to Organic Photonics Applications Menu]]</td>~~

	~~</tr>~~
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	Electro optical materials change their index of refraction when an electric field is applied. This effect can be used to create devices such as optical modulators and switches.		Electro optical materials change their index of refraction when an electric field is applied. This effect can be used to create devices such as optical modulators and switches.

2009-09-14T16:52:17Z

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			<td style="text-align: left; width: 33%">[[Optical Networks\|Previous Topic]]</td>
			<td style="text-align: center; width: 33%">[[Main_Page#Organic Photonics Applications in Information Technology\|Return to Organic Photonics Applications Menu]]</td>
			<td style="text-align: right; width: 33%">[[Materials Processing and Fabrication\|Next Topic]]</td>

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	<td style="text-align: left; width: 33%">[[~~Passive~~ Optical ~~Polymers~~\|Previous Topic]]</td>		<td style="text-align: left; width: 33%">[[Optical Networks\|Previous Topic]]</td>
	<td style="text-align: center; width: 33%">[[Main_Page#Organic Photonics Applications in Information Technology\|Return to Organic Photonics Applications Menu]]</td>		<td style="text-align: center; width: 33%">[[Main_Page#Organic Photonics Applications in Information Technology\|Return to Organic Photonics Applications Menu]]</td>
			<td style="text-align: right; width: 33%">[[Materials Processing and Fabrication\|Next Topic]]</td>

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2009-09-10T17:03:22Z

Desirable modulator characteristics

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	=== Desirable modulator characteristics ===		=== Desirable modulator characteristics ===
	These are the characteristics we are seeking in an organic modulator.		These are the characteristics we are seeking in an organic modulator.
	*Loss: 6-8dB fiber-to-fiber		*Loss: 6-8dB fiber-to-fiber - this is also known as insertion loss.
	*Vp ~ 0.3 - 1.0V		*Vp ~ 0.3 - 1.0V
	*Bandwidth: > 20GHz		*Bandwidth: > 20GHz

2009-09-10T16:56:53Z

Modulators

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	*V<sub>π</sub> = 3.6V for 2.4cm electrode		*V<sub>π</sub> = 3.6V for 2.4cm electrode
	<br clear='all'>		<br clear='all'>


			== All Optical Switching and All Optical Signal Processing ==
			All optical switching (AOS) uses an input light of one wavelength to control the passage of light of another wavelength, analogous to how the gate voltage of a transistor opens and closes a circuit. All optical signal processing (AOSP) extends this to modulate a signal frequency again using light rather than an electrical signal as the gate.

			Unlike silicon nitride waveguides where evanescent coupling occurs above the guide, silicon-based devices still possess the unique ability to provide extremely strong confinement of the evanescently coupled wave inside a nano-slotted waveguide. This provides sizable intensities which, when coupled with the large nonlinearity of the chromophore, permits the use of reduced interaction lengths allowing for smaller devices and the potential for chip-scale integration. For this reason, organic-silicon based photonics still remain a critical area of interest for AOSP.

	== Conclusion ==		== Conclusion ==

2009-09-03T21:10:48Z

Hybrid EO-polymer/sol-gel waveguide modulators benefits

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	=== Hybrid EO-polymer/sol-gel waveguide modulators benefits ===		=== Hybrid EO-polymer/sol-gel waveguide modulators benefits ===
	[[Image:Hybrid_polymer_solgel_basic.PNG\|thumb\|~~300px~~\|]]		[[Image:Hybrid_polymer_solgel_basic.PNG\|thumb\|400px\|Schematic of hybrid EO polymer / sol-gel modulator]]
	Basic premise: A robust waveguide device can be constructed using photosensitive hybrid sol-gel. Different functions can be implemented by overlaying an active film. The wave can be brought to the film and then returned to the sol-gel waveguide.		Basic premise: A robust waveguide device can be constructed using photosensitive hybrid sol-gel. Different functions can be implemented by overlaying an active film. The wave can be brought to the film and then returned to the sol-gel waveguide.

2009-09-03T21:09:23Z

Desirable modulator characteristics

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	'''Modulator Device Figure-of-Merit'''		'''Modulator Device Figure-of-Merit'''

	Device FOM = ~~:<math>~~(Insertion loss in dB)*V\pi\,\!</math>		Device FOM = (Insertion loss in dB) <math>*V\pi\,\!</math>

	'''Modulator Material Figure-of-Merit'''		'''Modulator Material Figure-of-Merit'''

2009-09-03T21:08:02Z

Electro-optic Polymer Materials and Devices

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	== Electro-optic Polymer Materials and Devices ==		== Electro-optic Polymer Materials and Devices ==
			[[Image:Device_fiber_modulator.png\|thumb\|300px\|Optical fiber components: connectors, modulator, inputs and outputs]]

	=== Electro – optic polymers compared with conventional materials ===		=== Electro – optic polymers compared with conventional materials ===

2009-09-03T21:07:45Z

Desirable modulator characteristics

← Older revision		Revision as of 14:07, 3 September 2009
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	=== Desirable modulator characteristics ===		=== Desirable modulator characteristics ===
	~~[[Image:Device_fiber_modulator~~.~~png\|thumb\|300px\|Optical fiber components: connectors, modulator, inputs and outputs]]~~		These are the characteristics we are seeking in an organic modulator.

	*Loss: 6-8dB fiber-to-fiber		*Loss: 6-8dB fiber-to-fiber
	*Vp ~ 0.3 - 1.0V		*Vp ~ 0.3 - 1.0V