Rof Electro-optic modulator 850 nm electro optic intensity modulator 10G

Short Description:

ROF-AM 850nm lithium niobate optical intensity modulator uses an advanced proton exchange process, which has low insertion loss, high modulation bandwidth, low half-wave voltage, and other characteristics, mainly being used for space optical communication system, the cesium atomic time base, pulse generating devices, quantum optics, and other fields.
Uses advanced proton exchange process, which has low insertion loss, high modulation bandwidth, low half-wave voltage, and other characteristics, mainly used for space optical communication system, the cesium atomic time base, pulse generating devices, quantum optics, and other fields.

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Product Detail

Rofea Optoelectronics offer Optical and photonics Electro-optic modulators products

Product Tags

Feature

Low insertion loss

Low half-voltage

High stability

Application

Space optical communication system

Cesium atomic time base

Pulse generator

Quantum Optics

Performance

Maxim DC extinction ratio

In this experiment, no RF signals were applied to the system. Pure DC extinciton has been measured.
1. Figure 5 demonstrates the optical power of modulator output, when modulator controlled at Peak point. It shows 3.71dBm in the diagram.
2. Figure 6 shows the optical power of modulator output, when modulator controlled at Null point. It shows -46.73dBm in the diagram. In real experiment, the value varies around -47dBm; and -46.73 is a stable value.
3. Therefore, the stable DC extinction ratio measured is 50.4dB.

Requirements for high extinction ratio

1. System modulator must have high extinction ratio. Characteristic of system modulator decides the maximum extinction ratio can be achieved.
2. Polarization of modulator input light shall be taken care of. Modulators are sensitive to polarization. Proper polarization can improve extinction ratio over 10dB. In lab experiments, usually a polarization controller is needed.
3. Proper bias controllers. In our DC extinction ratio experiment, 50.4dB extinction ratio has been achieved. While the datasheet of the modulator manufacture only lists 40dB. The reason of this improvement is that some modulators drift very fast. Rofea R-BC-ANY bias controllers update the bias voltage every 1 second to ensure fast track response.

Specifications

Parameter				Symbol		Min	Typ	Max	Unit
Optical parameters
Operating wavelength				l		830	850	870	nm
Insertion loss				IL			4.5	5	dB
Optical return loss				ORL				-45	dB
Switch extinction ratio @DC				ER@DC		20			dB
Dynamic extinction ratio				DER			13		dB
Optical fiber	Input port					850nm PM fiber(125/250μm)
	output port					850nm PM fiber(125/250μm)
Optical fiber interface						FC/PC、FC/APC Or Customization
Electrical parameters
Operating bandwidth （-3dB）					S₂₁	10	12		GHz
Half-wave voltage Vpi		RF			@1KHz		2.5	3	V
		Bias			@1KHz		3	4	V
Electrical return loss					S₁₁		-12	-10	dB
Input impedance			RF		Z_RF	50			W
			Bias		Z_BIAS	1M			W
Electrical interface						SMA(f)

Limit Conditions

Parameter	Symbol	Unit	Min	Typ	Max
Input optical power@850nm	P_in,Max	dBm			10
Input RF power		dBm			28
bias voltage	Vbias	V	-15		15
Operating temperature	Top	℃	-10		60
Storage temperature	Tst	℃	-40		85
Humidity	RH	%	5		90

Characteristic curve

ordering information:

ROF

Modulator type ：

AM---intensity modulator

Operating wavelength ：

08---850nm

Operating bandwidth ：2.5G---2.5GHz8G---8GHz10G---10GHz

Input/output optical fiber ：PP---PM/PM

Connector ：FA---FC/APCFP---FC/PC

SP---user specified

please contact me if you have special requirement

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Rofea Optoelectronics offers a product line of commercial Electro-optic modulators, Phase modulators, Intensity modulator, Photodetectors, Laser light sources, DFB lasers,Optical amplifiers, EDFA, SLD laser, QPSK modulation, Pulse laser, Light detector, Balanced photodetector, Laser driver, Fiber optic amplifier, Optical power meter, Broadband laser, Tunable laser, Optical detector, Laser diode driver, Fiber amplifier. We also provide many particular modulators for customization, such as 1*4 array phase modulators, ultra-low Vpi, and ultra-high extinction ratio modulators, primarily used in universities and institutes.
Hope our products will be helpful to you and your research.

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