Are your optical modules compatible with Cisco, Huawei, Arista, and Juniper?

Yes. All HYTOPTODEVICE optical modules are 100% compatible with major brands including Cisco, Huawei, Arista, and Juniper switches and routers, with no configuration changes required.

Are your modules new or refurbished?

All HYTOPTODEVICE modules are brand new, original manufactured products. We do not sell refurbished or used optical modules.

Do your optical modules support DDM/DOM monitoring?

Yes. Our optical modules support Digital Diagnostic Monitoring (DDM/DOM), allowing real-time monitoring of temperature, voltage, current, TX power, and RX power.

What is your warranty policy?

HYTOPTODEVICE provides a standard warranty on all optical modules. Please contact our sales team for specific warranty terms and conditions.

Do you ship internationally from Shenzhen, China?

Yes. We ship worldwide from our facility in Shenzhen, China. International shipping is available for all orders including bulk and OEM orders.

Cisco C38 DWDM‑SFP‑4692‑80 Compatible 1.25G DWDM SFP Transceiver Module | 1000BASE-DWDM 1546.92nm 80km 100GHz | HYTOPTODEVICE

High‑performance Cisco DWDM‑SFP‑4692‑80 compatible replacement transceiver, 100GHz ITU‑T 1546.92nm single‑mode 80km reach, TEC‑controlled DFB laser and complete DDM monitoring. Zero‑alert plug‑and‑play for Cisco switches, ideal for metro DWDM networks and remote radio backhaul applications.

CH	Cisco Compatible P/N	CH	Cisco Compatible P/N
CH37	DWDM‑SFP‑4772‑80	CH50	DWDM‑SFP‑3740‑80
CH38	DWDM‑SFP‑4692‑80	CH51	DWDM‑SFP‑3661‑80
CH39	DWDM‑SFP‑4612‑80	CH52	DWDM‑SFP‑3582‑80
CH40	DWDM‑SFP‑4532‑80	CH53	DWDM‑SFP‑3504‑80
CH41	DWDM‑SFP‑4453‑80	CH54	DWDM‑SFP‑3425‑80
CH42	DWDM‑SFP‑4373‑80	CH55	DWDM‑SFP‑3347‑80
CH43	DWDM‑SFP‑4294‑80	CH56	DWDM‑SFP‑3268‑80
CH44	DWDM‑SFP‑4214‑80	CH57	DWDM‑SFP‑3190‑80
CH45	DWDM‑SFP‑4135‑80	CH58	DWDM‑SFP‑3112‑80
CH46	DWDM‑SFP‑4056‑80	CH59	DWDM‑SFP‑3033‑80
CH47	DWDM‑SFP‑3977‑80	CH60	DWDM‑SFP‑2955‑80
CH48	DWDM‑SFP‑3898‑80	CH61	DWDM‑SFP‑2877‑80
CH49	DWDM‑SFP‑3819‑80	CH62

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Description

Cisco C38 DWDM‑SFP‑4692‑80 Compatible 1.25G DWDM SFP Transceiver Module | 1000BASE‑DWDM 1546.92nm 80km Bulk Wholesale

Product Overview

HYTOPTODEVICE C38 DWDM SFP acts as a direct pin‑compatible replacement for Cisco DWDM‑SFP‑4692‑80, conforming to the 100GHz ITU‑T C‑band grid at 1546.92nm wavelength. It delivers stable error‑free 80km transmission over G.652.D single‑mode fiber for dense DWDM transport systems.

Adopting TEC‑cooled DFB laser assembly, this transceiver maintains tight wavelength tolerance to minimize adjacent‑channel crosstalk, with power consumption kept below 2W for continuous full‑load operation. Pre‑configured Cisco EEPROM suppresses unsupported‑transceiver alerts. Hot‑swap support together with SFF‑8472 DDM monitoring simplifies routine maintenance for metro ring topologies and remote radio unit backhaul links.

Key Technical Specifications

Cisco Compatible	DWDM-SFP-4692-80	Vendor Name	HYTOPTODEVICE
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1546.92nm	Max Distance	80KM
Connector	Duplex LC	Transmitter Type	DWDM DFB (Cooled)
Cable Type	SMF	Receiver Type	PIN
TX Power	0~+5dBm	Receiver Sensitivity	< -26.0dBm
Power Consumption	≤2W	Receiver Overload	-3.0dBm
Protocols	SFP MSA, SFF-8472	Operation Temperature	0 to 70°C (32 to 158°F)

Usage Guidelines & Best Practices

Fiber & Connector: Use OS2 single-mode fiber with LC-UPC connectors only (LC-APC strictly prohibited). Match transceiver wavelength with your DWDM ITU channel.
Optical Attenuation (Crucial): Never direct-connect! Since Tx reaches up to +5 dBm, install a 10–15 dB inline attenuator at the Rx port during lab/short-link testing to keep input power below -3 dBm and prevent receiver burnout.
Architecture: Built with a Cooled DFB (TEC) transmitter and a PIN receiver (sensitivity ~ -24 dBm, 24 dB link budget).
Thermal Management: Operating temp: 0°C to 70°C. Proper airflow is essential for TEC wavelength locking to prevent link drops.
Handling: Supports hot-swapping via bail latch. Always clean LC fiber end-faces before connection.

Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware

Custom Cisco‑specific EEPROM signature eliminates alarms and port lockdown. No extra configuration or firmware upgrade is required for plug‑and‑play deployment across supported Cisco enterprise and carrier‑grade hardware.

Fully Compatible Cisco Platforms:

Cisco Catalyst 3850, 9200, 9300 Series enterprise switches
Cisco ISR 4000‑series multi‑service branch routers
Cisco ASR 1000‑series carrier backbone routers
Cisco ONS optical transport platforms supporting 100GHz DWDM SFP
All Cisco devices accepting original DWDM‑SFP‑4692‑80 transceivers

2. Multi-Brand Cross Compatibility

Compliant with universal SFP MSA specifications, this C38 DWDM SFP runs error‑free on Huawei, H3C, Juniper, MikroTik and other mainstream network hardware. Custom firmware adaptation is available for complex multi‑vendor DWDM environments.

3. Free Value-Added Services

HYTOPTODEVICE offers competitive bulk pricing for resellers, system integrators and data center contractors. We provide free special compatible EEPROM reprogramming for all bulk orders.

Available options include private label printing, custom packaging and deployment consulting. All modules pass optical calibration, temperature cycling and 72-hour full-traffic burn-in. Large-volume orders enjoy tiered discounts to reduce project CAPEX.

Primary Application Scenarios

• Metro DWDM Ring: Dedicated C38 wavelength realizes single-fiber multiplexing to reduce carrier fiber investment

• Wireless Cell Backhaul: Passive 80km gigabit connectivity lowers remote site operation expenses

• Enterprise Cross-Branch: Low-cost private fiber for inter-office data & real-time video transmission

• MAN Service Aggregation: Isolated wavelengths avoid service cross-interference and boost network stability

• Industrial IoT Monitoring: Anti-interference optical design for long-distance smart city & factory data links

• Legacy Network Upgrade: Add C-band wavelengths without full infrastructure overhaul

Connectivity Solutions(Applications)

1.Direct Cabling DWDM Solution

Pair C38 module with standard DWDM multiplexers & demultiplexers to carry multi-service signals on single fiber, simplify field wiring for medium-short gigabit spans.

2. 80km Long-Haul DWDM Solution

Match EDFA optical amplifiers to offset natural fiber attenuation, stabilizing DWDM signal for intercity carrier core backhaul networks.

The Core Feature

1. Low-Power Data Center Efficient Connectivity

Ultra-low power design reduces power consumption and heat generation. The optimized single-fiber structure simplifies data center cabling, enabling cost-effective and stable gigabit Ethernet transmission.

1G Data Center Connectivity low power single-fiber Gigabit Ethernet DWDM SFP solution

2.Verified Host Interoperability for Cisco Devices

Calibrated firmware supports zero-alarm plug-and-play for Huawei, Cisco and other mainstream devices. It solves multi-brand compatibility problems and adapts to hybrid network deployment.

3.Rigorous Testing, Uncompromising Reliability

Integrating precise wavelength locking, stable 80km long-haul transmission and multi-scenario adaptability, this module forms a complete gigabit DWDM solution. It fully meets diversified networking demands for carrier metro backhaul and enterprise long-distance interconnection.

Comprehensive 1.25G 80km C17 DWDM networking solution for carrier and enterprise deployment

FAQ

Q1: Will deploying third‑party compatible optics void the original hardware warranty of my network devices?

A: MSA‑compliant compatible transceivers will not void host‑device warranty in most commercial territories. If your hardware implements strict OEM lock‑in mechanisms, our complimentary EEPROM adjustment can eliminate alert messages to prevent warranty‑related disputes. Feel free to contact us for region‑relevant suggestions.

Q2: Can you adjust module firmware for special‑purpose or obsolete networking equipment?

A: Our technical team provides custom EEPROM reprogramming for niche switches, old transport platforms and industry‑specific communication hardware. Provide your exact device model information, and we can deliver targeted solutions within one working day with round‑the‑clock technical support access.

Q3: Does this C38 DWDM SFP satisfy Multi‑Source Agreement industry specifications?

A: Every C38 unit strictly follows SFP MSA mechanical, electrical and optical criteria and supports complete SFF‑8472 DDM functions. Physical dimensions, pin definitions and optical performance fully comply with industry standards for good cross‑device interchangeability.

Q4: How much link budget can this 1546.92nm DWDM transceiver offer?

A: This module provides 24dB total link budget calculated from 0~+5dBm transmit output and ‑24dBm receiving sensitivity, supporting full 80km transmission over standard single‑mode fiber under typical loss conditions.

Q5: How does the product maintain wavelength accuracy after long‑term continuous running?

A: The built‑in TEC thermoelectric component dynamically stabilizes laser chip temperature, assisted by factory wavelength calibration. This suppresses wavelength drift and preserves 100GHz channel spacing even under long‑duration continuous operation.

Q6: Could accumulated insertion loss from DWDM multiplexers bring down the whole fiber link?

A: The 24dB link margin tolerates ordinary insertion loss generated by MUX/DEMUX units. Once total attenuation from fiber, splices and WDM parts exceeds budget, adding EDFA amplifiers can restore signal power.

Q7: What is the shortest fiber length allowed when no optical attenuator is installed?

A: For this 80km‑rated DWDM transceiver, the minimum safe unattenuated fiber length is 15 km. Shorter connections must adopt a 10‑15 dBm fixed attenuator to prevent receiver saturation and permanent hardware damage.

Q8: Are surge‑protection circuits integrated inside the C38 optical transceiver?

A: Internal protection circuits defend laser and receiver chips against over‑voltage, over‑current and ESD surges occurring during hot‑swap insertion, improving reliability inside densely‑populated rack environments.

Q9: In DWDM systems, why is thermal control critical for wavelength‑locking performance?

A: Laser emitting wavelength changes along with temperature variation. The embedded TEC adjusts laser working temperature in real‑time to lock to the 1546.92nm ITU‑T channel and suppress crosstalk among densely‑arranged DWDM wavelengths.

Q10: What risks appear if the module runs above its specified upper operating temperature?

A: Excessive operating temperature results in wavelength offset, higher bit‑error ratio and abnormal DDM readings. Prolonged high‑temperature operation accelerates laser aging. For high‑temperature sites, use rack cooling facilities or select our industrial wide‑temperature version.

Q11: In what ways can operators check real‑time DDM diagnostic data on managed switches?

A: Real‑time parameters such as transmit power, receive power, module temperature and supply voltage are accessible via native switch CLI transceiver commands or web‑based management panels, no extra third‑party software installation is necessary.

Q12: What protective measures are taken during packaging to avoid connector damage in transit?

A: Each C38 transceiver gets LC dust caps after full optical testing, then individually packed inside anti‑static moisture‑proof bags together with shock‑absorbing foam, protecting fiber end‑faces from scratches, dust and oil contamination during shipment and handling.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
Ample stock, fast global DHL/FedEx shipping in 3–5 working days
Free pre-sales engineering support for custom EEPROM & private label firmware
Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia

Quality Certification & Compliance

At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.