High extinction ratio modulator

ROF-AM-HER series high extinction ratio of electro-optic modulator based on M - Z push-pull structure intensity, has a lower half wave voltage and stable physical and chemical characteristics, using special technology to ensure the device with high extinction ratio of DC. The device has high response speed, and therefore is widely used in light pulse generator, optical fiber sensing, laser radar, and other fields.

Features

l The extinction ratio is greater than 40dB

l Low insertion loss

l High modulation bandwidth

l Low half wave voltage

Applications

l Optical pulse generator

l Brillouin sensing system

l Laser radar

Performance parameter

Parameter		Symbol	Min	Typ	Max	Unit
Optical parameters
Operating wavelength		l	1525		1565	nm
Insertion loss		IL		4	5	dB
Optical return loss		ORL			-45	dB
Switch extinction ratio@DC		ER@DC	35	40	50	dB
Dynamic extinction ratio			Panda PM
Optical fiber	Input port		Panda PM or SMF-28
Fiber interface			FC/PC、FC/APC Or user to specify
Electrical parameters
Operating bandwidth（-3dB）		S₂₁	10	12		GHz
Half-wave	RF	Vπ@50KHz			5	V
Half-wave	Bias	Vπ@Bias			7	V
Electrical return loss		S₁₁		-12	-10	dB
Input impedance	RF	Z_RF		50		W
Input impedance	Bias	Z_BIAS	10000			W
Operating bandwidth（-3dB）			SMA(f)

Limit Conditions

Parameter	Symbol	Min	Typ	Max	Parameter
Input optical power	P_in,Max	dBm			20
Input RF power		dBm			28
Bias voltage	Vbias	V	-20		20
Operating temperature	Top	ºC	-10		60
Storage temperature	Tst	ºC	-40		85
Humidity	RH	%	5		90

Characteristic

Mechanical Diagram(mm)

Order information

ROF

HER

Intensity modulator

High extinction ratio

Wavelength：

15---1550nm

Bandwidth：

2.5---2.5GHz

10G---10GHz

20G---18GHz

Optical fiber：

PP---PMF-PMF

PS---PMF-SMF

Facet：

FA---FC/APC

FP---FC/PC

SP---User's customization

*please contact our sales if you have special requirements.