Mitsubishi Electric Corporation Semiconductor Group FU-68PDF-520M89B, FU-68PDF-520M88B, FU-68PDF-520M87B, FU-68PDF-520M86B, FU-68PDF-520M84B Datasheet

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 μm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

DESCRIPTION

Module type FU-68PDF-V520MxxB is a 1.55μm DFBLD module with polarization maintaining optical fiber. This module is suitable to a CW light source for external modulator for use in 2.5Gb/s and 10Gb/s digital optical communication systems.

This module is prepared in accordance with ITU-T recommendation wavelength channel plan for DenseWDM transmission.

FEATURES

Multi quantum wells (MQW) DFB Laser Diode module

Input impedance is 25Ω

Emission wavelength is in 1.55μm band Polarization maintaining optical fiber pig-tail Built-in optical isolator

Built-in thermal electric cooler Butterfly package

With photodiode for optical output monitor

APPLICATION

High speed transmission systems (~10Gb/s)

Dense-WDM systems

ABSOLUTE MAXIMUM RATINGS (Tld=Tset)

Parameter		Symbol	Conditions	Rating	Unit
Laser diode	Optical output	Pf	CW	24	mW
	power
	Forward current	If	CW	150	mA
	Reverse voltage	Vrl		2	V
Photodiode	Reverse voltage	Vrd		20	V
	Forward current	Ifd		2	mA
Thermo-	Cooler current	Ipe		1.3	A
electric cooler	Cooler voltage	Vpe		3.1	V
(Note)
Operating case temperature		Tc		-20 ~ 70	°C
Storage temperature		Tstg		-40 ~ 85	°C

Note) Even if the thermo-electric cooler (TEC) is operated within the rated conditions, uncontrolled current loading or operation without heatsink may easily damage the module by exceeding the storage temperature range. Thermistor resistance should be properly monitored by the feedback circuit during TEC operation to avoid the catastrophic damage.

MITSUBISHI (OPTICAL DEVICES)

FU-68PDF-V520MxxB

1.55 μm DFB-LD MODULE WITH POLARIZATION MAINTAINING FIBER PIGTAIL

(WAVELENGTH SELECTED, BIAS CIRCUIT INTEGRATED, DIGITAL APPLICATION)

ELECTRICAL/OPTICAL CHARACTERISTICS (Tld=Tset, Tc=25°C unless otherwise noted)

Parameter	Symbol	Test Conditions		Limits		Unit
			Min.	Typ.	Max.
Threshold current	Ith	CW	-	10	25	mA
Operating current	Iop	CW, Pf=20mW	-	-	130	mA
Operating voltage	Vop	CW, Pf=20mW	-	-	2	V
Input impedance	Zin	Pf=20mW	-	25	-	Ω
Light-emission central	λc	CW, Pf=20mW		(Note 1)		nm
wavelength
Central wavelength drift with	Δλc/ Tc	Tc=-20~70°C	-1	-	0	pm/°C
case temp.
Laser operating temperature	Tset	-	15	-	35	°C
Spectral line width	f	CW, Pf=20mW	-	-	20	MHz
Side mode suppression ratio	Sr	CW, Pf=20mW	33	40	-	dB
Cutoff frequency	fc	Pf=20mW	2	-	-	GHz
(-1.5dB optical)
Polarization extinction ratio	Ex	CW, Pf=20mW	20	25	-	dB
Relative intensity noise	Nr	CW, Pf=20mW,	-	-155	-145	dB/Hz
		0.5~3GHz
Tracking error	Er	Tc=-20~70°C,	-	-	0.5	dB
(Note 2)		APC, ATC
Differential efficiency	η	CW, Pf=20mW	0.15	-	-	mW/
						mA
Monitor current	Imon	CW, Pf=20mW, Vrd=5V	0.2	-	4	mA
Optical isolation	Iso	Tc=25°C	35	-	-	dB
		Tc=-20~70°C	23	-	-
Dark current (PD)	Id	Vrd=5V, Tc=-20~70°C	-	-	0.1	μA
Capacitance (PD)	Ct	Vrd=5V, f=1MHz	-	-	10	pF

Note 1) See Table 1.

Note 2) Er=max|10×log(Pf / Pf@25°C)|