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Asher Monroe
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DWDM SFP 1539.77nm provides precise ITU alignment and stable long-distance operation.
DWDM-SFP-3977=
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DWDM SFP 1539.77NM 100GHZ ITU
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DWDM-SFP-3977=
- Description:
- DWDM SFP 1539.77NM 100GHZ ITU
- Rating:
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- Brand:
- Cisco
- GTIN:
- 821455036143
- Condition:
- Warranty:
- 3
- List Price:
$7,174.00
- Price:
$2,654.3963% off
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DWDM-SFP-3977= Overview
DWDM-SFP-3977= is a high-performance SFP transceiver designed for dense wavelength division multiplexing applications. It supports a 1G data rate with an LC connector and is engineered for long-range transmission over single-mode fiber, making it ideally suited for critical telecom and data center deployments.
This precise DWDM module meets industry standards by supporting both Ethernet and Fibre Channel protocols while maintaining a compact SFP form factor. Its robust design, optimized physical dimensions, and reliable performance make it a perfect fit for enterprise networks, metro systems, and long-haul communications.
DWDM-SFP-3977= price is $2,654.39, a 63% saving from the Cisco list price of $7,174.00. DWDM-SFP-3977= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for DWDM-SFP-3977= for additional pricing. Browse the full Sfp+ For 3000 Series series or explore all Cisco products.
DWDM-SFP-3977= Specifications
- Product Type
- Transceiver
- Form Factor
- SFP
- Data Rate
- 1G
- Connector Type
- LC
- Wavelength
- 1528 - 1563 nm
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 80 km
- Supported Protocols
- Ethernet, Fibre Channel
- Network Interface
- Fiber
- Power Consumption
- 2.8W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Huawei, Arista
- Product Name
- DWDM-SFP-3977=
- Height
- 0.5 inches
- Width
- 0.7 inches
- Depth
- 1.0 inches
- Weight
- 0.1 lbs
DWDM-SFP-3977= Use Case
Metropolitan Backbone Capacity Expansion with DWDM-SFP-3977
Telecom operators extending a 40 km metro backbone leverage the DWDM-SFP-3977 (1539.77 nm, 100 GHz ITU) to add a dedicated 100 Gbps channel over existing single-mode fiber. This plug-and-play SFP enables rapid capacity scaling via 80-channel DWDM multiplexing, delivering cost-efficient bandwidth growth, sub-1 ms latency, and improved network ROI.
High-Capacity Data Center Interconnect using DWDM-SFP-3977
Enterprises linking two data centers 10 km apart deploy the DWDM-SFP-3977 (1539.77 nm, 100 GHz ITU) transceiver on dark fiber to establish a 100 Gbps ring. This solution streamlines real-time data replication with sub-millisecond latency, maximizes existing fiber utilization, and reduces OPEX by avoiding expensive wavelength upgrades.
Business Continuity & Disaster Recovery Over DWDM with DWDM-SFP-3977
Financial institutions replicating mission-critical data to a secondary site 80 km away install the DWDM-SFP-3977 (1539.77 nm, 100 GHz ITU) in a resilient DWDM ring. The pluggable 100 G interface ensures uninterrupted data mirroring, accelerates failover under 50 ms, and enforces regulatory compliance through high-availability, fiber-delivered connectivity.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| DWDM-SFP-3977= |  DWDM-SFP-5817= |  DWDM-SFP-3268= |  DWDM-SFP-5655= |  DWDM-SFP-5575= | |
|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 1G | 10G | 10G | 10G | 1G |
| Depth | 1.0 inches | 0.69 inches | 0.80 inches | 2.24 inches | N/A |
| Fiber Type | Single-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Height | 0.5 inches | 0.55 inches | 0.70 inches | 0.67 inches | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 80 km | 80 km | 80 km | 80 km | 80 km |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 2.8W | 2.5W | 3.5W | 3.2W | N/A |
| Product Name | DWDM-SFP-3977= | DWDM-SFP-5817= | DWDM-SFP-3268= | DWDM-SFP-5655= DWDM SFP Transceiver | DWDM-SFP-5575= |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Transmission Distance | Long-Range | Long-Range | Long-Range | Long-Range | Long-Range |
| Wavelength | 1528 - 1563 nm | 1550 nm | 1550 nm | 1565 nm | 1550 nm |
| Weight | 0.1 lbs | 0.2 lbs | 0.08 lbs | 0.1 lbs | N/A |
| Width | 0.7 inches | 0.98 inches | 0.50 inches | 0.66 inches | N/A |
Reviews & Ratings
B
Bella Hayes
5
Low-latency and reliable performance for metro and backbone networks.
C
Caius Frost
5
Easy integration with existing DWDM infrastructure.
D
Daphne Barrett
4
Professional-grade SFP with minimal signal loss.
E
Evan Steele
5
Durable and consistent for critical optical networks.
Questions & Answers
What is the DWDM-SFP-3977= transceiver?
The DWDM-SFP-3977= is a 100 GHz ITU-compliant SFP DWDM optical transceiver operating at 1539.77 nm for long-distance single-mode fiber networks.
Which network applications suit the DWDM-SFP-3977=?
This module is ideal for metro, long-haul, and telecom DWDM networks requiring high channel density and precise wavelength alignment.
What is the maximum transmission distance supported by the DWDM-SFP-3977=?
It supports up to 80 km on standard G.652 single-mode fiber and can reach 120 km with inline optical amplification.
Which fiber connector type does the DWDM-SFP-3977= use?
It uses a duplex LC connector, ensuring easy and secure termination on single-mode fiber.
What are the key specifications of the DWDM-SFP-3977=?
Key specs include 1539.77 nm wavelength, 100 GHz ITU grid, 1.25 Gb/s data rate, ±0.1 nm wavelength tolerance, and a 3.3 V DC power supply.
Is the DWDM-SFP-3977= hot-pluggable?
Yes, the DWDM-SFP-3977= is hot-pluggable, allowing installation or removal without powering down the host equipment.
Does the DWDM-SFP-3977= support digital diagnostics?
Yes, it features Digital Diagnostic Monitoring (DDM) per SFF-8472 for real-time monitoring of optical power, temperature, and voltage.
What is the operating temperature range of the DWDM-SFP-3977=?
The module operates between –5 °C and +70 °C, ensuring reliability across diverse environmental conditions.
Which power supply voltage does this module require?
The DWDM-SFP-3977= requires a single 3.3 V DC power supply in compliance with the SFP MSA.
Is the DWDM-SFP-3977= MSA compliant?
Yes, it meets SFP MSA, ITU-T G.694.2, Telcordia GR-63, and CE/FCC safety and EMI standards.
Which channel spacing does the DWDM-SFP-3977= use?
It adheres to a 100 GHz channel spacing on the ITU-T DWDM grid for precise wavelength separation.
Can the DWDM-SFP-3977= be used in C-band networks?
Yes, operating at 1539.77 nm places it squarely within the C-band spectrum for DWDM deployments.
What data rate does the DWDM-SFP-3977= support?
This transceiver supports up to 1.25 Gb/s, compatible with Gigabit Ethernet and SONET/SDH systems.
How do I install the DWDM-SFP-3977= transceiver?
Insert the module into a compatible SFP slot until it clicks, then verify link status via your switch or router interface.
How do I ensure compatibility with my network equipment?
Verify SFP MSA compliance and wavelength support in your switch or router datasheet and ensure firmware is up to date.
What is the typical lead time and availability?
The DWDM-SFP-3977= is generally stocked with a lead time of 1–2 weeks, subject to order volume and shipping location.
What warranty and support options are offered?
Standard warranty is five years, with options for extended support contracts and on-site replacement services.