HWA4700|Zhejiang GT Lasers Tech. Co., Ltd.

GT LASERS HWA4700 series is a next-generation variable gain EDFA, which with the most excellent performance and most completes functions in the market. It adopts nowadays most excellent optical performance, most advanced electronic technology and most complete software functions. Remarkable transient suppression control technology and heat management control technology let many complicated optical functions achieved. It is the most versatile multifunction optical amplifier in the market.

This next generation variable gain amplifier module is composed with two stages amplifier: variable gain pre-amplifier (PA) and variable gain booster amplifier (BA). The gain of these two stages amplifier can be independently set in a certain range. There is a connector between the two stages amplifier, which used for mid-stage access, such as optical Add-Drop module (OADM), dispersion compensation module (DCM) and others optical modules.

HWA4700 is a device with Mid-stage Access, which according with various communication technology requirements of C-Band 44 or 88 channels DWDM system, widely used in long distance and ultra-long distance transmission network. Since its complete functions, it can be used as line amplifier, pre-amplifier, booster amplifier and add-drop multiplexing amplifier.

◉ Next-generation Variable Gain Amplifies

◉ With Mid-stage Access Version

◉ Accord with the various communication technology requirements of C-Band 44 or 88 channels DWDM system

◉ Adopt latest total integration electronic transient control technology

◉ Adopt digital control technology which can adapt to heat management

◉ Mid-stage versions can be set as independent pre-amplifier and booster amplifier

◉ Saturation output power optional: 18dBm, 20dBm, 23dBm, 24dBm

◉ AGC, APC, ACC working mode

◉ Optical monitoring channels optional: OSC Add/Drop

◉ Carrier-class security and reliability, and network management function

◉ The LCD, LED at the front panel offers the work index and warning alarm of all equipment.

◉ Standard RS232 communication interface.

◉ 10/100M Ethernet interface supports SNMP and WEB remote network management.

◉ 1+1 powers supply back up optional, hot-plug function available

◉ Low power consumption

◉ Excellent P/P ratio in area

◉ OADM optical Add-Drop multiplexing

◉ DCM ultra-long trunk dispersion compensation

◉ ASON intelligent optical network

◉ ROADM reconfigurable optical Add-Drop multiplexing

◉ Long distance and Ultra-long distance network among the cities

◉ Line amplifier, pre-amplifier, booster amplifier

Performance			Index			Supplement
Performance			Min.	Typ.	Max.	Supplement
Optical feature	Operating wavelength range (λ)	(nm)	1529.16		1563.86	ITU 88CH
	Input power range	(dBm)	-35		+3	HWA4718
			-35		+3	HWA4720
			-40		0	HWA4723
			-40		0	HWA4724
	Gain range	(dB)	13		21.5	G21Typ
			18		30	G30Typ
			23		35	G35Typ
			29		41	G40Typ
			12		24	G25Typ
	Mid-stage loss range 3)	(dB)	0		8	HWA4718
			0		10
			0		12
	Max. output power	(dBm)			18.5	HWA4718
					20	HWA4720
					23	HWA4723
					24	HWA4724
	Gain flatness	(dB)		0.7	1.0	Peak-to-peak
	Noise figure	(dB)		5.5	5.9	Max gain
	Polarization dependence loss	(dB)			0.3
	Polarization dependence gain	(dB)			0.3
	Polarization mode dispersion	(ps)			0.3
	Pump power leakage	(dBm)			-30
	OSC wavelength ranges ¹⁾	(nm)	1500	1510	1520
	Return loss²⁾	(dB)	40			UPC
	Transient over /under shoot	(dB)	-1.5		1.0	16dB Add/Drop
	Transient offset	(dB)			0.5
General feature	SNMP interface		RJ45
	Serial interface		RS232
	Power supply	(V)	90		265	220VAC
	Power supply	(V)	30		72	-48VDC
	Power consume	(W)			25
	Operating temp.	(°C)	-5		+70
	Storage temp.	(°C)	-40		+85
	Operating relative humidity	(%)	5		95
	Size (W)×(D)×(H)	(mm)	483×205×44

Note: 1, 2, 3, 4: these optic performance are typical application, can be customized according to customers’ requirements.
5: APC optional, return loss>50dB

Model	Max. Output power	Gain range	Input power range Typ.(dBm)	Mid-stage loss	Optical power monitoring mode	OSC optical monitoring mode
HWA4718-G21-M00-S00	18.5	13~21.5	+3~-30	0~8	Without	Without
HWA4718-G30-M00-S00		16~28	+3~-35	0~10
HWA4718-G35-M00-S00		23~35	0~-35	0~12
HWA4718-G40-M00-S00		28.5~40.5	+3~-30	0~12
HWA4720-G30-M00-S00	20	18.5~30.5	+3~-35	0~12
HWA4720-G35-M00-S00		23~35	0~-35
HWA4720-G40-M00-S00		29~41	+3~-35
HWA4723-G30-M00-S00	23	19~31	0~-35	0~12
HWA4723-G35-M00-S00		25~37	0~-37
HWA4723-G40-M00-S00		29~41	0~-40
HWA4724-G35-M00-S00	24	25~37	0~-37	0~12
HWA4724-G40-M00-S00	24	30.5~42.5	0~-40	0~12

Note: 1), Optical port monitoring mode options:
1, MO (With output monitoring optical port)
2, MI (With input monitoring optical port)
3, MIO (With input and output monitoring optical port)
2), OSC optical port mode of optical management channel:
1, OD (OSC/Drop)
2, OA (OSC/Add)
3, ODA (OSC/Drop & Add)

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