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GPON OLT Optical Transceiver GPON OLT C+++

Single fiber bi-directional data links asymmetric TX 2500Mbps/RX1250Mbps application 1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver Small Form Factor Pluggable package with SC/UPC Connector Single 3.3V power supply Digital diagnostic monitoring interface Low EMI and excellent ESD protection RoHS6 Compliance LVPECL compatible data input/output interface Class I laser safety standard IEC-60825 compliant LVTTL fast receiver Signal Detect (SD) indication response LVTTL transmitter disable control and transmitter laser fault alarm Digital burst RSSI function to monitor the input optical power level

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OLT PON

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Product Details

Features

Single fiber bi-directional data links asymmetric TX 2500Mbps/RX1250Mbps application

1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver

Small Form Factor Pluggable package with SC/UPC Connector

Single 3.3V power supply

Digital diagnostic monitoring interface

Low EMI and excellent ESD protection

RoHS6 Compliance

LVPECL compatible data input/output interface

Class I laser safety standard IEC-60825 compliant

LVTTL fast receiver Signal Detect (SD) indication response

LVTTL transmitter disable control and transmitter laser fault alarm

Digital burst RSSI function to monitor the input optical power level

Applications

Gigabit Ethernet Passive Optical Networks (GPON)

Gigabit-Capable Passive Optical Networks Class C+++ 60km 17~32dB attenuation range

Standards

Complies with SFP Multi-Source Agreement (MSA) SFF-8074i

Complies with IEEE 802.3ah

Complies with FCC 47 CFR Part 15, Class B

Complies with FDA 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007

Complies with SFF-8472

Compatible with TR-NWT-000870 4.1 ESD sensitivity classification Class2.

Compatible with Telcordia GR-468-CORE

Ordering information

Part. No	Specifications
Part. No	Package	Class	Temperature (°C)	Reach (km)	DDM
YH-G1214-S3360C	SFP	C+++	-5~70	20~60	Y
YH-G1214-S3340C	SFP	C++	-5~70	20~40	Y
YH-G1214-S3320C	SFP	C+	-5~70	20	Y
YH-G1214-S3310C	SFP	B+	-5~70	10	Y

Specification

Absolute Maximum Ratings
Parameter	Symbol	Min	Max	Unit
Storage Ambient Temperature	T_STG	-40	85	°C
Storage Humidity	H_S	5	90	%
Operating Humidity	H_O	5	85	%
Power Supply Voltage	V_CC	0	+3.6	V
Receiver Damaged Threshold		+6		dBm

Recommended Operating Conditions
Parameter	Symbol	Min	Typical	Max	Unit	Notes
Operating Case Temperature	Tc	-5		70	°C
Operating Case Temperature	Tc	-40		85	°C
Power Supply Voltage	V_CC	3.135	3.3	3.465	V
Supply Current	I_CC			500	mA
Power Consumption	P_W			1.65	W
Data Rate			2.5		Gbps

Electrical Characteristics
Parameter	Symbol	Min	Typical	Max	Unit	Notes
Transmitter Differential Input Voltage		300		2400	mV
Receiver Differential Output Voltage		500		1200	mV	LVPECL, DC Coupled
Transmit Fault Alarm Voltage	V_OH	2.4		V_CC+0.3	V	LVTTL
Transmit Fault Alarm Voltage	V_OL	0		0.4	V	LVTTL
Transmit Disable Voltage	V_IH	2		V_CC+0.3	V	LVTTL
Transmit Disable Voltage	V_IL	0		0.8	V	LVTTL
Input Differential Impedance		90	100	110	Ω
Transmit Disable Assert Time	T_OFF			10	us
Loss Of Signal Voltage	V_OH	2.4		V_CC	V	LVTTL
Loss Of Signal Voltage	V_OL	0		0.4	V	LVTTL
Loss Of Signal Assert Time	T_D		500		us
Loss Of Signal De-assert Time	T_A		500		us

Optical transmitter Characteristics
Parameter	Symbol	Min	Typical	Max	Unit	Notes
Launched Power (avg.)	P_OUT	+7		+9	dBm	C+++
		+5		+7		C++
		+3		+5		C+
Operating Wavelength Range	λ_C	1480	1490	1500	nm
Spectral Width (-20dB)	∆λ			1	nm
Side Mode Suppression Ratio	SMSR	30
Extinction Ratio	ER	9			dB	PRBS 2⁷-1 @1.25Gbit/s
Transmitter and Dispersion Penalty	TDP			2.3	dB	Transmit on 80km SMF
Optical Output Power after TX Disable	P_DIS			-32	dBm
Output Eye Diagram	Compliant with IEEE 802.3ah
Transmitter Reflectance				-10	dB

Optical Receiver Characteristics
Parameter	Symbol	Min	Typical	Max	Unit	Notes
Wavelength Range	λ_C	1260	1310	1360	nm
Receiver Sensitivity	SEN	-29		-32	dBm	Note1
Optical Power Input Overload	SAT	-6			dBm	Note1
LOS Assert Level	LOSA	-45			dBm
LOS Deassert Level	LOSD			-31	dBm
LOS Hysteresis	HYS	0.5		6	dB
Receiver Reflectance				-12	dB

Note 1: PRBS 2⁷-1@1.25Gbps, transmitter is operating, BER ≤1×10^-10

Figure 1 RSSI TIMING SEQUENCE

RSSI Characteristics
Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
RSSI Trigger-Low		0		0.8	V
RSSI Trigger-High		2.0		Vcc	V
RSSI Trigger Delay	T_D	0		3000	ns
Optical Signal During Time	T_ONT	300			ns
RSSI Trigger width	T_W	300		T_ONT- T_D	ns
I2C Access Prohibited Time	Tp			500	μs

Digital Diagnostic Monitoring Information

Parameter	Accuracy	Calibration	Note
Temperature	±3°C	External
Voltage	±3%	External
Bias Current	±10%	External
TX Power	±3dB	External
RX Power	±3dB	External

Note: The digital diagnostic monitoring interface defines 256-byte memory map in EEPROM, which makes use of the 8 bit address 1010001X (A2h). Please refer to the SFF-8472 Rev 10.2 for the detail information.

Pin definition

Pin	Name	Level/Logic	Function	Description
1	NC	NA	NA	Not
2	TX_Fault	LVTTL	TX	Fault
3	TX_Dis	LVTTL	Transmitter	Enable/Disable
4	MOD-DEF2	LVTTL	SDA	I2C
5	MOD-DEF1	LVTTL	SCL	I2C
6	MOD-DEF0	MOD-DEF0	Module	Definition
7	Reset	LVTTL	Receiver	Reset
8	SD	LVTTL	Signal	Detect
9	RSSI	Trigger	RSSI Trigger for Transceiver A/D Conversion	High: enable RSSI A/D conversion
10	GNDR	NA	Ground	Receiver
11	GNDR	NA	Ground	Receiver
12	RD-	LVPECL	RX	Data-
13	RD+	LVPECL	RX	Data+
14	GNDR	NA	Ground	Receiver
15	V	cc	R	NA
16	V	cc	T	NA
17	GNDT	GNDT	Ground	Transmitter
18	TD+	LVPECL	TX	Data+
19	TD-	LVPECL	TX	Data-
20	GNDT	NA	Ground	Transmitter

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FAQ

Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

What is an optical network terminal (ONT)? How does it differ from a regular modem?

An optical network unit (ONU) is an end device in a fiber optic network that converts optical signals transmitted via fiber optics into electrical signals (for use by routers, computers, and other devices), and vice versa.

What is the architecture of a fiber optic network (PON)?

Fiber optic networks typically use a passive optical network (PON) architecture, which is divided into three layers

What are the functions of the PON port and LAN port on an optical network terminal (ONT)?

PON port (fiber optic interface): Connects to the fiber optic cable entering the home and receives optical signals (usually SC/APC interface, blue square head).

Why does the optical network terminal need to register LOID/SN?

LOID (Logical Identifier) or SN (Serial Number) is the credential used by operators to bind user identities, and is used for OLT authentication of optical modems.

Optical modem dialing vs. router dialing: which is better?

Ordinary users: Optical modem dialing. Game/NAS users: Switch to bridge mode and dial up using a high-performance router.

How to determine whether the fiber optic signal is normal?

Check the optical modem indicator lights Log in to the optical modem management interface: Check the optical power (unit: dBm)

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